Most passersby did not stop to watch, but many accepted the white pieces of paper with statistics and bullet points about crime and brutality.
Many of the protesters carried posters with pictures of people allegedly killed by law enforcement agents.
The Coalition sponsored similar rallies yesterday in 55 cities nationwide.
While most were rallies and candle light vigils, Albany, N.Y. featured a bike ride with stops at alleged sites of police brutality.
The Coalition is most well known for its book, Stolen Lives: Killed by Law Enforcement, which purports to document over 2,000 cases of people allegedly killed while in law enforcement custody. The book was sold at yesterday's rallies, along with shirts, pins and other Coalition paraphernalia.
The sober protests did not drown out another political group in the Square. Just off to the side, six Ralph Nader supporters clad in green handed out bumper stickers and pins in support of their candidate.