Demonstrators gathered for a third straight day last night in East Flatbush, Brooklyn, to remember the life of 16-year-old Kimani Gray, who was shot and killed by New York Police Department officers earlier this week. The candlelight vigil was marked by concerns about violence, as demonstrators clashed with police officers once again. Reports vary on the number and nature of arrests, from a dozen to as many as 50. According to Gothamist:

An NYPD spokesman tells us they’re "still ascertaining and tabulating" the number of people arrested last night, explaining that some were issued summons while others were "sent through the system" (meaning at least one night in the Tombs). We saw at least 13 arrests, and the total number could easily be double that if not more. (The Post hears 50.) Many of those arrests resulted in a teenager on the pavement with three or four cops crowding over them. One particularly tense stand-off between a female demonstrator and a male police officer began with the cop telling her to get on the sidewalk, and her responding, "Or what, you’ll shoot me?" The officer, whose helmet had the number 7987 on it, said, "No, but I’ll slap you."

According to those who have been touched by police violence in Brooklyn, the anger among protestors is understandable.

"I’m not going to tell people don’t be angry because we’re all angry," said Franclot Graham, whose teenage son, Ramarley Graham, was shot and killed after police chased him into his Bronx home last year. A New York police officer has been charged with manslaughter in the death. "It’s OK to vent but you have to respect the family’s wishes and be peaceful," he said.

Gray’s parents have said that they will not speak publicly as long as the violence continues because it will cloud their message. Their son was shot multiple times over the weekend. Witnesses have said that Gray was unarmed, while police contend that the teenager pointed a gun at then and prompted the gunfire.

Violence reportedly broke out at Wednesday night’s candlelight vigil after police detained Gray’s sister.

See more photos from last night’s protest and standoff with cops after the jump.

[This post has been updated since publication]