Many in St. Louis are upset over the George Zimmerman verdict. About 500 people marched in downtown St. Louis Sunday evening.
Many demonstrators said they were marching to show support for Trayvon Martin's family. Most say they're calling for federal charges or a civil suit against Zimmerman who was acquitted in a criminal trial Saturday.
The St. Louis march was mostly peaceful, with a small splinter group getting police attention after overturning a dumpster. Four were arrested.
Organizers say another march is planned for Thursday.