we saw a different dynamic," Johnson said, according to St. Louis Public Radio. "Protest crowds were a bit smaller, and they were out earlier. We had to respond to fewer incidents than the night before. There were no Molotov cocktails tonight."

The demonstrations were largely peaceful, particularly early in the night. Police forced the crowds to stay on the move, enforcing a ban on "static assembly" that was implemented this week.

A prayer session ended with urges for people to head home, reports NPR's Brakkton Booker. But some people stayed on the streets, and as the night wore on, bottles were thrown at police. That led officers to put on helmets and shields and try to find the "agitators," Johnson said.

"Nearly four dozen arrests were made by the time theprotests ended for the night," Brakkton says. "This includes one person police say is from Texas — and it was the third time this person has been arrested at the protests."

St. Louis County Prosecutor Bob McCulloch has said he will begin presenting witnesses to a grand jury today in the death of 18-year-old Michael Brown, who was killed after being shot by officer Darren Wilson on Aug. 9.

"McCulloch's critics say that McCulloch has a conflict of interest in this case because his father was a policeman killed on duty by a black suspect. Others point to McCulloch's role campaigning for County Councilman Steve Stenger in his successful bid to oust incumbent County Executive Charlie Dooley in the Aug. 5 primary. Dooley is African-American."

Last night, Missouri Gov. Jay Nixon