officer who pulled a gun on a group of protesters to be fired. any officer who should not be wearing that uniform needs to get off this force. reporter: david, police in new york city believe there are a number of outside groups infiltrating peaceful protests. and i can tell you, just a few moments ago, things were really tense here, demonstrators facing off with nypd officers, demanding they take a knee and demanding justice. david? stephanie, thank you. now to the state of emergency in los angeles tonight. curfews back in place there, as we learn new information about some of the people in the crowds taking advantage of this moment. here s matt gutman now. reporter: tonight, l.a. under curfew, shut down and boarded up. for days protesters marching into places like beverly hills. squaring off against police in mostly peaceful protests, from l.a. s city hall, secured by to national guard, to the heart of