Stills was among 87 people arrested Tuesday during the protest, held outside the home of Kentucky Attorney General Daniel Cameron in which more than 100 people marched from Ballard High School to his home. He was released Wednesday afternoon.
Stills had been taken into custody Tuesday and booked early Wednesday morning. Louisville law enforcement authorities told the Houston Chronicle and the Louisville Courier Journal that stills has an Oct. 8 court date.
"Arrested for peacefully protesting while Breonna Taylor's murderers are still out on the street," Stills tweeted Wednesday.
Protests have surfaced around the country as the protesters demand for charges to be brought against three officers involved in Taylor's death March 13. Taylor, 26, was shot by police in her home in Louisville.
Stills -- and the 86 others arrested -- were charged with intimidating a participant in the legal process, a felony. They also were changed with misdemeanor disorderly conduct and criminal trespass. Stills' arraignment was scheduled Wednesday.
Police followed the protesters from the school to Cameron's home at about 4:30 p.m. EDT Tuesday. Louisville Metro Police Department said Cameron requested for the protesters to be "trespassed" from the property.
"The protesters chose to occupy the front yard of a home owned by the Kentucky Attorney General and continuously chant towards he and his neighbors," Louisville police said in a statement. "At his request, they were trespassed from the property.
"All were given the opportunity to leave, were told that remaining on the property would be unlawful, and chose not to leave."
The Texans told NFL Network they are "aware of the situation and gathering more information."
Police were executing a search warrant with a no-knock clause as part of a narcotics investigation when they entered Taylor's apartment. The officers were met with a gunshot from Taylor's boyfriend, and returned fire. Taylor was shot multiple times by the officers, police said.
When Stills was arrested, he was wearing a shirt that read "Breonna Taylor's killers are still police."
Stills, 28, is well-known for his activism as an NFL player. He also was one of the few NFL players who has continued to kneel on the sideline during the national anthem for the past four seasons in protest of police brutality and racial inequality.
Stills was a three-time winner of the Miami Dolphins Nat Moore Community Service Award before he joined the Texans. He also has worked alongside police to help underserved communities during his NFL career.
His work with police has included gift and food giveaways as well as ride-alongs and roundtable discussions with officers and children in the communities they serve.
The seven-year NFL veteran had 40 catches for 561 yards and four touchdowns in 13 games last season for the Texans. Stills also has played for the New Orleans Saints.