Updated at 9:20 p.m.: Revised to include additional reaction to the sentence.

Amber Guyger got 10 years in prison Wednesday for murdering Botham Jean, a sentence that set off angry chants outside the courtroom and an unexpected moment of forgiveness inside.

Botham Jean's younger brother Brandt Jean hugs Amber Guyger after a jury sentenced her to 10 years in prison Wednesday. (Tom Fox / Staff Photographer)

"If you truly are sorry," Botham's 18-year-old brother, Brandt Jean, told Guyger from the witness stand before walking down and embracing her, "I know I can speak for myself, I forgive you."

The victim's mother, Allison Jean, said Guyger's sentence would give the fired officer 10 years to reflect and "change her life." The native St. Lucian also called for change and a renewed focus on police training in the city where her son died.

"There is much more to be done by the city of Dallas," she said, addressing a crowd gathered around her on the seventh floor of the courthouse. "The corruption that we saw during this process must stop."

Prosecutors had asked for no less than 28 years, a reminder that Jean would have celebrated his 28th birthday this week if not for Guyger.

She faced between five and 99 years or life in prison, and the jury considered but rejected a "sudden passion" defense that could have reduced her punishment to two to 20 years. Guyger will be eligible for parole after five years.

Guyger, 31, was off-duty but still in uniform the night she killed Jean at the South Side Flats apartments just blocks from police headquarters. She said she mistook his apartment for hers and thought he was a burglar.

After a day of testimony focused on how long Guyger would spend in prison, Jean's 18-year-old brother said in his victim-impact statement that he wished she didn't have to serve any time at all.

Instead, he said, he wanted for Guyger what his older brother would have wanted.

"I think giving your life to Christ would be the best thing that Botham would want for you," he told her. "I love you as a person, and I don't wish anything bad on you."

"Can I give her a hug, please?" Brandt Jean asked. "Please."

Read more: Two stunning hugs end Amber Guyger's trial on a merciful note

As soon as the judge said it was OK, Guyger rushed to the victim's brother and wrapped her arms around him. They held each other in a long embrace, while sobbing could be heard in the courtroom. State District Judge Tammy Kemp wiped away tears during the moment.

Gathered outside the courtroom, activists shocked by the sentence began chanting, “No justice, no peace.”

Dee Crane, the mother of Tavis Crane, a young black man who was fatally shot by an Arlington police officer in 2017, cried as she asked: "How many of us does it take to get justice?"

"What about my son? What about Botham Jean?" Crane said through tears. "How many of us is it going to take before you understand that our lives matter?"

Later, Botham Jean’s mother, Allison Jean, said the Dallas Police Department has “a lot of laundry to do,” calling for better training of officers.

"If this was applied in the way that it ought to have been taught, my son would have been alive today," she said. "If Amber Guyger was trained not to shoot in the heart, my son would be standing here today."

"We love you, Mrs. Jean!" someone called out as attorneys escorted the family away.

Judge Tammy Kemp hugs Botham Jean's mother, Allison, after the trial ended Wednesday. (Tom Fox / Staff Photographer)

‘How could it be possible?’

Before jurors delivered their decision on Guyger’s punishment, they heard tearful testimony from those who knew Jean best.

His father, Bertrum Jean, told the jury he longed to see his oldest son again.

"How could it be possible?" he said, shaking his head and dabbing at his eyes with a white handkerchief. "I'll never see him again."

Botham Jean's father Bertrum Jean breaks down on the witness stand talking about the day he buried his son. (Tom Fox / Staff Photographer)

Every day is a struggle, he said, but Sundays are especially difficult.

Every week after worship services, Botham Jean talked to his father in St. Lucia about what had happened in church.

He still can't watch videos of Botham singing.

"I'm still not ready for it," he said. "It hurts me that he's not there."

Prosecutor LaQuita Long displayed a photo of Bertrum and Allison Jean at their son's funeral. She asked what was going through his head when it was taken.

"How could that happen to us, our family?" Bertrum Jean said through tears. "How could we have lost Botham — such a sweet boy. He tried his best to live a good, honest life. He loved God. He loved everyone. How could this happen to him?"

A juror wiped away tears with the collar of her denim jacket as Jean broke down on the stand. Then other jurors began to wipe their eyes.

A final appeal to the jury

In the prosecution’s closing arguments, Long urged the jurors to consider Jean's loved ones as they deliberated Guyger's punishment.

Long, clutching a photo taken at Jean’s burial, told the jury it shouldn’t consider a lighter sentence based on a sudden passion defense. He didn’t provoke his own death, she said.

"The only reason we all sit in this courtroom today is because of her actions," Long said. "And for her actions, there must be consequences."

Assistant District Attorney LaQuita Long shows the jury a photo of Botham Jean's parents grieving during closing remarks in the sentencing phase of Amber Guyger's murder trial. (Tom Fox / Staff Photographer)

In his closing arguments, Guyger's attorney Toby Shook pleaded for leniency.

He acknowledged the jury had seen her offensive social media posts and racist text messages, but he called them only a "snapshot" of her life.

Amber Guyger spent the night in jail after she was convicted Tuesday of murdering Botham Jean. (Dallas County Sheriff's Office)

Shook argued that Guyger's true character was apparent through her relationship with her friends and family.

He also implored jurors not to punish his client harshly because of other high-profile police shootings.

"This event wasn't planned," Shook said. "This event is so unique, you'll never see it again in the history of the United States."

He said lengthier punishments should be reserved for dangerous, deliberate criminals — not people who have made mistakes.

"Amber Guyger has a conscience. She's shown true remorse," Shook said. "She feels horrible for what she did, and for the rest of her life, every day, every hour, every minute, she'll think of what she did to Botham Jean and regret it in every bit of her soul."

Guyger’s family testifies

Guyger, who turned her head slightly to watch each attorney speak, did not testify during the sentencing phase of her trial.

The first defense witness was her mother, who told the jury how Guyger hasn't been the same since shooting Jean.

#AmberGuyger’s mother, Karen, said Amber always said she wanted to take Botham Jean’s place after the shooting. Watch the trial live ➡️ https://t.co/RHlJMzy6yR#AmberGuygerTrial pic.twitter.com/ETyv4XBDZq — NBC DFW (@NBCDFW) October 2, 2019

Karen Guyger said her daughter has told her repeatedly that she wished it was Jean who had shot her when she entered the unarmed man's home.

"She always would tell me she wishes she could've taken his place. She feels very bad about it," she said through tears, holding a crumpled tissue.

Early in the trial, Guyger's defense had told jurors she’d faced adversity early in life and had interactions with police that made her want to be an officer when she grew up.

Amber Guyger's mother, Karen Guyger, prepares to testify during the sentencing phase of her daughter's murder trial. (Tom Fox / Staff Photographer)

On Wednesday, her mother told the jury how she had called police when Guyger was 6, after she realized a man she was dating had molested her daughter.

Alana Guyger, Amber Guyger's sister, said that since shooting Jean, her sister "doesn't have the same light or energy that she had before."

"She's expressed to me how she feels bad spending time with her family because he can't be with his," Alana Guyger said.

The defense also called on close friends from Guyger's childhood to testify on her behalf.

Maribel Chavez recalled fond memories of Guyger from high school mariachi band.

They remained friends as adults, and Chavez said that the former officer was a protector who loved being around people but that everything has changed since the shooting.

"She does not feel like she deserves to have any kind of happiness," Chavez said.

Immediate reactions

After the 10-year sentence was announced, District Attorney John Creuzot said he’d expected a longer sentence.

"Over 37 years, I have seen so many cases," he said. "I have long stopped trying to guess what a jury would do, and I have learned to accept their judgment."

He said the Jean family also accepted the outcome.

"They're happy that this is done, that she's been held accountable, and it's over," Creuzot said.

As the sun set, a crowd formed on the steps outside the courthouse to protest the sentence, which many believed was insufficient.

Omar Suleiman, a civil rights activist and imam, acknowledged the grace Jean’s younger brother had shown in hugging and forgiving Guyger but said it doesn’t suggest people shouldn’t fight against injustice.

“If you’re going to talk about the grace of his brother, then talk about the outrage of his mother,” Suleiman said.

Activist Dominique Alexander, who had planned the gathering as a celebration of Guyger’s guilty verdict, expressed disgust that Guyger faced only 10 years in prison.

“What justice did today was slap us back in the face with levels of injustice,” he said.

1 / 2Alexis Stossel cries Wednesday while reminiscing about Botham Jean, her close friend from college during the sentencing phase of Amber Guyger's murder trial(Tom Fox / Staff Photographer) 2 / 2Assistant District Attorney LaQuita Long (left) walks Alexis Stossel through a playful series of text messages she exchanged with her friend Botham Jean, whose nickname for Stossel was Bix Tex.(Tom Fox / Staff Photographer)

One protester was arrested in a confrontation with police. Safiya Paul, 31, was taken into custody on a misdemeanor charge of obstructing a roadway.

Paul, an activist from Jean's native home of St. Lucia, was released Thursday morning on $500 bail. She had come to Dallas to see the trial and danced outside the criminal courthouse the day that Guyger was convicted.

"It's unfortunate this young lady was brutalized simply for exercising her First Amendment rights," said Kim T. Cole, general counsel for the Next Generation Action Network. "Ever since July 7 [2016], Dallas police have verbally expressed that they are afraid and their behavior last night was indicative of that. ... They overreacted."

The protesters marched through downtown Dallas for hours, winding their way to the county jail before finally making their way back to where they started: the criminal courthouse.

"Who runs these streets?" the group shouted. "We do!"

The demonstrators called for wholesale changes at the Dallas Police Department and for firing Dallas Police Association President Mike Mata.

At a news conference Wednesday evening, Dallas Police Chief U. Reneé Hall said parts of the trial had concerned her.

Although she did not mention Mata by name, she described testimony that he had tampered with an in-car video camera after Guyger was placed in the vehicle.

Hall also said she planned for internal affairs to investigate Officer Martin Rivera, Guyger’s former police partner, who deleted texts with Guyger that outlined their sexual relationship.

Read more: Dallas Police Chief to ask for review of incidents revealed by Amber Guyger trial

‘We trust that God will do the rest’

At a worship service Wednesday night at the church Jean attended, pastor Sammie Berry described the dissonant reactions to the verdict and the sentence.

“When we heard the verdict, and it was what we were looking for, and then when we heard the sentence, it caused us to stand still a little bit,” he said. “What I learned is that there's a good amount of reconciliation that's needed in our brotherhood, and in our city, and in our nation.”

A video of Brandt Jean, Botham Jean's brother, plays at a church service where Bertrum Jean and Allison Jean, parents of Botham Jean, spoke Wednesday after Amber Guyger's sentencing. (Ashley Landis / Staff Photographer)

Allison Jean likened the year since the shooting to being "in the eye of the hurricane."

"What happened to us has really tested my faith in God," she said. "It almost made me give up. But when I reflected on Botham's own motivation, he would always say, don't give up — look on the bright side."

Botham Jean’s father told the worshippers that despite his family’s deep pain, it has found comfort in faith.

“We have mourned,” Bertrum Jean said. “We have wept. But we trust that God will do the rest.”

Staff writers Robert Wilonsky, Marc Ramirez, Sarah Sarder and Cassandra Jaramillo contributed to this report.

Here's a look back at a few key moments during the trial:

Read more about Botham Jean and Amber Guyger.

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