@Ron The last time NYC had a curfew was in 1943—in response to protests around a white police officer killing a black soldier. I don't think these protests are going to stop until the city backs down and ends it. Our elected Public Advocate has been on the streets with the protesters and is calling for the end of the curfew. The State Legislature and City Council are both up in arms about it as well. Cuomo and De Blasio can frame it as responding within the political system, not capitulating to "mob rule".
And to tell the truth, the best way to end the looting at this point would probably be to get the police off the streets. Protesters in NYC have been trying to prevent looting as well, but it's hard to do when the police are creating chaos.
Plus, they shouldn't be booking anyone during this pandemic. Packing people into cells for over 24 hours will do far more to spread Sars-CoV-2 than the outdoor protests.