Yvette Gentry retired from the Louisville Metro Police Department in 2014. She takes over a department facing national scrutiny following the shooting death of Breonna Taylor in March.

The protest marks the final day of an event known as "BreonnaCon," which called for justice for Breonna Taylor. Most protesters were charged with obstruction and disorderly conduct.

The council's Republican Caucus is calling for Democratic Mayor Greg Fischer to step down. The caucus cites Fischer's handling of probes into the Breonna Taylor and David McAtee deaths as reasons.

"I absolutely expect there to be charges based on the evidence," attorney Benjamin Crump says after Taylor's family meets with Louisville's mayor and the Kentucky attorney general.

The billboards will be placed across Louisville, Ky., where Taylor was shot and killed in her apartment by police. The signs' message urges the arrest of the officers involved.