Pockets of the United States descended into chaos Sunday as another day of mass demonstrations over the death of yet another black man in police custody led to another night of fire and fury.

Protests that began peacefully exploded into mayhem as windows were smashed, stores were looted, buildings were vandalized and police vehicles were torched. The unrest spread from Chicago, Atlanta and Boston to Sacramento, Seattle and Sioux Falls, S.D. As protesters and police clashed outside the White House for a third consecutive night, President Trump tweeted a call for “LAW & ORDER!”

In some cities, officers in riot gear continued to increase their use of force, which added to the disorder. Early Monday, Kentucky Gov. Andy Beshear ordered a state investigation after a man was fatally shot during an overnight confrontation with Louisville police and the National Guard.

Here are some significant developments:

More than half of the nation’s governors have called in the National Guard to help quell the unrest. Meanwhile, at least 45 million Americans were under a curfew Sunday night, and many cities have extended their overnight restrictions.

A number of major retailers, including Walmart, Target and Apple, have temporarily closed their stores in some areas rocked by upheaval. In California, state government buildings “in downtown city areas” will be closed Monday.

More than 4,000 people were arrested in U.S. cities over the weekend, according to the Associated Press. New York Mayor Bill de Blasio’s daughter, Chiara, was among the hundreds of people arrested in the city after failing to disperse, law enforcement sources told The Washington Post.