Round 2.

ST. LOUIS (AP) — Protesters angry about the grand jury decision to not indict Ferguson police Officer Darren Wilson have overturned barricades and swarmed the steps of the federal courthouse in downtown St. Louis.

About 300 people marched from a park to the courthouse during the lunch hour Tuesday and remained there for about 30 minutes before heading elsewhere. Organizers gave tips beforehand to anyone who was planning to be intentionally arrested.

Those who swarmed the courthouse steps chanted “You didn’t indict. We shall fight.”

It was one of several protests in the St. Louis area Tuesday over Monday’s grand jury decision not to indict Wilson for killing 18-year-old Michael Brown on Aug. 9.

Update: More mayhem.

Update: