Hundreds gathered on the plaza between City Hall and the War Memorial as various speakers take turns at the microphone.
Mark-Anthony Montgomery of the group Hearts with Promise, said the protesters are fighting the "war on poverty" and the "war on injustice."
"America, you told us we were animals! You called us slaves!" Montgomery told the crowd. "Black lives matter. White lives matter. All lives matter.
"Thank you, Freddie Gray, for your life!" -- Yvonne Wenger