Frustrated by a rift between police nationwide and the communities they serve, more than 300 people marched in Dallas on Saturday beside the family of 15-year-old Jordan Edwards, who was shot and killed by a Balch Springs officer now facing a murder charge.

The crowd gathered in downtown Dallas at St. Paul's United Methodist Church around 10 a.m. before marching a mile through Uptown and ending at Pike Park, not far from where four decades ago a 12-year-old boy was killed by a Dallas police officer.

"If my son is not safe, then your son is not safe," said Colette Flanagan, who founded Mothers Against Police Brutality after her son, Clinton Allen, was killed in a confrontation with police in 2013.

Marching with Flanagan and the Edwards family was the family of Jordan Gonzales, who was killed by police in Corpus Christi last October, and hundreds of others outraged at the number of lives lost around the country.

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At Pike Park, Jordan Edwards' father briefly spoke through tears and thanked everyone for being there.

"This Father's Day is really hard for me," Odell Edwards said. "Every time I look at my kids and my family, I see the hurt in their eyes and I try to be strong for them. I'm going to miss Jordan. I'm going to miss him a lot."

Jordan and four others — including his two brothers — were leaving a house party in April as police arrived to break it up when a police officer fired into their car, striking Jordan.

The march, organized by Mothers Against Police Brutality, Faith Forward Dallas and other local groups, was held a day after a jury acquitted a Minnesota police officer in the fatal shooting of Philando Castile last July.

"Just yesterday we got word that our man Philando Castile, his life did not matter," said pastor Frederick Haynes of Friendship-West Baptist Church. "We are marching through these streets because we are determined that there be liberty and justice for all."

1 / 4Protesters gathered at St. Paul United Methodist Church at the start of the "March to End Police Brutality" on Saturday, June 17, 2017, in Dallas. The march ended with a rally at Pike Park. (Ryan Michalesko / Staff Photographer) 2 / 4A protester in the "March to End Police Brutality" carries a sign calling for justice for Jordan Edwards, a teen who was shot by a Balch Springs police officer. (Ryan Michalesko / Staff Photographer) 3 / 4Odell Edwards tearfully speaks about his son Jordan Edwards at a police brutality rally in uptown Dallas, Texas. Jordan Edwards was shot and killed by a Balch Springs police officer on April 29, 2017.(Brian Elledge / The Dallas Morning News) 4 / 4The family of Jordan Edwards joins Pastor Michael Waters on the stage during a march to end police brutality on Saturday, June 17, 2017, in Dallas. The march ended with a rally at Pike Park. Edwards was fatally shot by a Balch Springs police officer in April. (Ryan Michalesko / Staff Photographer)

Sharing her son's story with the crowd, Flanagan said "everyone's son is in peril" if law enforcement policies don't treat everyone equally.

"It doesn't matter who you are," she said. "We need laws to protect us and our children."

State Sen. Royce West also attended the rally and called for people to fight for change through the voting booth.

"This isn't an anti-police rally. We support law enforcement. What we don't support is police brutality," West said as the crowd cheered in agreement. "If we are going to make a change as it relates to these incidents, we have to change the law."

During the rally, local activist John Fullinwider unveiled a sign to unofficially rename Pike Park in honor of Santos Rodriguez, a 12-year-old who was shot and killed by a Dallas police officer four decades ago just blocks from the park.

On July 24, 1973, officers handcuffed and questioned Santos and his brother, David, about money stolen from a soda machine.

During the interrogation, Officer Darrell Cain held a .357 Magnum to Santos' left ear and pulled the trigger. The officer was sentenced to five years in prison for murder with malice and was released after he served half that time.

"This park is dedicated to the hundreds of people who lost their lives in that 40-year period from the death of Santos to the death of Jordan Edwards," Fullinwider said.