Sadly, this is very much worth remembering:
Looting and arson in the 1960s wiped out entire business districts in black neighborhoods. Many riots were precipitated by encounters with police, such as a police raid on an illegal after-hours bar in Detroit—an incident that resulted in the destruction of over 2,000 small businesses and buildings. This cycle played out in cities across the nation, resulting in 200 deaths and enormous property damage. The physical and emotional scars of those riots remained decades after the fires expired.
Detroit, Newark, South Central: the list is awful.