On Thursday night in Brooklyn, a suspect was chased and quickly surrounded by a group of patrolmen in blue uniform jackets who ordered him to halt.

The man, David Flores, 33, who witnesses say was fondling himself in front of children in a Hasidic section of Brooklyn known as Borough Park, was about to be caught by the men in blue. He began shooting at the men, all unarmed, with a .22-caliber handgun, the authorities said, hitting and wounding four before being tackled.

Although these streets are in the jurisdiction of the New York Police Department  the 66th Precinct  these patrolmen were not police officers. In fact, two were bakers, one was a dry cleaner and the fourth sells insurance.

They were volunteers with the Brooklyn South Safety Patrol, a licensed, unarmed civilian group. They wore blue jackets with emblems, but they also wore skull caps and had forelocks of the Hasidic. They yelled in Yiddish as chaos erupted about 8 p.m. on 49th Street between 9th and 10th Avenues.