The killing of a Texas police officer on Friday in a Houston suburb was unprovoked, a county sheriff said, saying the victim was a target because of his uniform. And the timing of the execution-style of murder of Harris County Deputy Darren Goforth may not be purely random either.

Suspect Shannon J. Miles, 30, of Houston, has been charged with capitol murder for shooting Goforth in the head from behind as he fueled his vehicle, then firing several rounds into his body as Goforth lay on the ground.

Miles apparently had no prior contact with Goforth, and the sheriff blames anti-police sentiment for the attack.

"It appears to be clearly unprovoked," said Harris County Sheriff Ron Hickman on Saturday, speaking of Friday's shooting of Darren Goforth at a gas station.

TRENDING: Support for Black Lives Matter sees massive plunge, polls say

The murder comes shortly after armed New Black Panther radicals marched on the Waller County jail earlier this month.

Breitbart Texas reported, "A group of armed members of the New Black Panther Party marched on the Waller County Jail Wednesday afternoon chanting "The revolution is on. … Off the pigs," and "Oink Oink … Bang Bang!"

Despite the rhetoric, the protest was peaceful and no arrests were made. The group of 15 Black Panthers was met by about 75 deputies, including about 10 horse-mounted crowd-control deputies and 30 crowd-control deputies in riot gear.

After the protest, Harris County Sheriff's Office Major Darryl Coleman told reporters, "We came here to maintain the peace. Our job was to protect the law abiding protesters, the Waller County deputies and Waller County property. It looks like we did our jobs well."

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On Aug. 9, a black radical going by the name of "Sunshine" stated in front of a group of white journalists and bloggers that all white people should be killed. She added, "You mother-f---kers thought we should be killed when ya'll came and stole us from Africa and put us in chains and murdered us for over 400 years, so yeah, you do need to die. I think everybody else on the planet would have peace when you're dead."

Then on Tuesday night, black radicals went on an Internet radio show hosted from Texas by "Sunshine" and called for the lynching of white people and the killing of cops to "turn the tide" and send a message against blacks being killed by cops.

"Sunshine" urged listeners to "Call now!! #fyf911 tonight we continue to dismantle the illusion of white supremacy …"

An unidentified black man spoke on the publically posted conference call and said, "When those mother f---kers are by themselves, that's when we should start f---kng them up. Like they do us, when a bunch of them ni--ers takin' one of us out, that's how we should roll up. … Cause we already roll up in gangs anyway. There should be six or seven black mother f---kers, see that white person, and then lynch their ass. Let's turn the tables. … We are already getting killed out here so what the f--k we got to lose? … We need to turn the tables on them. Our kids are getting shot out here. Somebody needs to become a sacrifice on their side."

The caller continued, "They are out their killing black people, black lives don't matter, that's what those mother f--kers … so we got to make it matter to them. … Find a mother f--ker that is alone. Snap his ass, and then f---in hang him from a damn tree. Take a picture of it and then send it to the mother f--kers."

The caller indicated they "just need one example," and "then people will start watchin'," resulting in a "trickle-down effect" which was how they could "get the upper hand."

Another black man spoke up, saying they needed to kill "cops that are killing us."

The first caller responded, "That will be the best method right there."

Breitbart Texas previously reported how Sunshine was upset when "racist white people" infiltrated and disrupted one of her conference calls. She subsequently released the phone number of one of the infiltrators. The veteran immediately started receiving threatening calls.

One supporters allegedly threatened the veteran, "We are going to rape and gut your pregnant wife, and your f---king piece of sh-- unborn creature will be hung from a tree."

During an emotional news conference after the shooting of Goforth, a "visibly angry" Hickman told reporters that "dangerous rhetoric" against law enforcement had "gotten out of control."

"We've heard black lives matter – all lives matter," he said. "Well, cops' lives matter, too."

One night after Goforth was murdered, more than a thousand people gathered at the site to memorialize him.

Goforth left behind a wife and two children.

There have been 24 firearms-related deaths of law enforcement officers this year, compared with 30 during the same period in 2014, the National Law Enforcement Officers Memorial Fund said.