WATCH: Flash Mob Protest for Michael Brown

If you thought flash mobs were over and done – trend faded, then think again!

A melodic flash mob popped up with a purpose and message during Saturday’s St. Louis Symphony performance. Attendees were stunned when two audience members stood up during intermission singing “Which Side Are You On?”

Not sure of exactly what was going on, the audience looked around confused as more protestors joined in from the balcony and throughout the floor seating, singing in unison “justice for Mike Brown is justice for us all,” while holding banners that read “Racism lives here” and “Requiem for Michael Brown 1996-2014.”

Saturday marked the two-month anniversary of Michael Brown’s death. From the ceiling, paper hearts inscribed with “Requiem for Michael Brown, May 20, 1996 – August 9 2014,” fell into the crowd as protestors peacefully exited the symphony hall chanting, “Black Lives Matter.” Peace and Power.

Watch the amazing movement, below!