https://nypost.com/2020/05/29/brass-knuckle-wielding-man-punches-nypd-sergeant-at-george-floyd-protest/
Anti-cop rage over the police-custody death of George Floyd boiled over in Brooklyn on Friday night — with an NYPD van being set on fire in Fort Greene Park and hundreds of protesters trying to surround the 88th precinct in Clinton Hill before being rebuffed by a massive police mobilization.
In all, some 200 people were arrested Friday and early Saturday in separate, heated protests in Lower Manhattan and Brooklyn, sources told The Post.
It was 9:30 p.m. when the empty police van was set ablaze in Fort Greene Park.
A crowd of some 3,000 protesters had converged on the Barclays Center in Prospect Heights hours earlier, with police releasing chemical mace as the demonstration grew unruly and began throwing objects at cops.
And still earlier in the day, in Lower Manhattan, at least 30 protesters were busted, including a man who allegedly punched an NYPD sergeant in the head with brass knuckles.