The Rev. Al Sharpton was among dozens arrested Wednesday as demonstrators blocked traffic at the height of the evening rush hour to protest the acquittal of three detectives in the 50-bullet shooting of an unarmed black man on his wedding day. Police said 216 people were arrested, including Sharpton, two survivors of the shooting and the slain man's fiancee. They lined up and put their hands behind their backs as police arrested them on disorderly conduct charges.

Sharpton, the two survivors and the fiancee were released about four hours later, said Sharpton spokeswoman Rachel Noerdlinger.

The demonstrators prayed, sang and chanted slogans including "no justice, no peace" as they converged on six heavily used bridges and tunnels that carry traffic to and from Manhattan island. The protests were part of a coordinated campaign to urge federal authorities to investigate the shooting of Sean Bell in November 2006.