A group holding "Black lives matter" signs took their protest to the streets to march to the courthouse, while a "Back the blue" contingent waved flags and counter-yelled.
Next Generation Action Network organized one of the protests, opposing police brutality, just as they did the rally on Monday.
Speakers called for the arrest of former McKinney corporal Eric Casebolt, who was seen throwing down a 15-year-old girl after a raucous pool party altercation last Friday.
He resigned on Tuesday, but so far, no charges have been filed against him.
The father of one of the teens involved in the pool incident spoke on her behalf.
"My daughter is in recovery mode right now, but I am not going to stop until she gets the justice that is due to her," he said. "It is not right for grown men to feel they are entitled to mishandle young girls."
For others, their protest was against opponents.
"Everybody here agrees we are American citizens and we have a right to protest what we believe in without thinking we are slaves and we need to go back to somewhere," said protester Jacqueline Walker.
On the other side, the other group of protesters waved flags, adamantly supporting McKinney police.
"You saw one video," said protest organizer Ed Coet. "You didn't see the whole thing. We don't know and they don't know if this police officer is guilty. Let the police do their investigation and if he's guilty, then let justice prevail."
One man open walked up with an assault rifle across his chest showing his support for the back the blue crowd.
Organizers say a thousand bikers will be ride through Texas tomorrow on their way to Washington, D.C.
"I think it's all unnecessary," said another protestor. "I don't think we need to be arguing back and forth. I don't think it's about racism."
McKinney officers stood back and watched, keeping the peace.
FOX 4 is told there were no arrests.
Despite the anger at some moments during the protest, FOX 4 caught a wonderful moment.
A man protesting police brutality and a man rallying in support of police met in the middle and talked about their differences. Then, they prayed, held hands and even hugged.
They hope their understanding can inspire others.
"They want to make it a black and white thing," said one of the men, Lashadion Anthony. "It's not a black and white thing. It's a community versus the police that are abusing their power. We're not saying that all police are racists and all police are bad, but there are certain police that are abusing their power."
"It means that we can work together," said the other man, Scott Harmaring. "It means there's a chance that we can fix some of the problems in our society today if we'd all just learn to do what we just did and work together and pray together, there's a chance…the policeman that created the problem is gone, but that doesn't make our whole police department racist."