In Buffalo, an SUV mowed down authorities in tactical gear with dogs and batons after they charged what appeared to be a handful of protesters, video showed and officials said.

Meanwhile, in the nation's most populous city, New York, more than 200 people who authorities said were setting small fires and breaking store windows in Manhattan and the Bronx were arrested, a police spokesperson said.

curfew began Monday night.

They will be out there again ensuring the rights of people to peacefully assemble," Police Commissioner Dermot Shea said Monday ahead of anticipated protests.

Hours before Monday's curfew began, de Blasio announced that another curfew would begin even earlier Tuesday evening, at 8 p.m., when it is still light out — although he said it was meant to control just a small percentage of demonstrators who had gotten out of hand.

In Minneapolis, where police had clashed with demonstrators and journalists covering the riots in dramatic fashion over the last several days, a calm appeared to set in across the city Monday evening, with hundreds of people gathered at a memorial at the site where Floyd was killed.

City officials, anticipating more problems Monday evening, imposed a curfew from 8 p.m.

and said the city was deploying 500 members of the National Guard on Monday night to protect critical infrastructure