The current unrest in Los Angeles is a lot different from the last time a U.S. president called out the National Guard to respond to violence on the streets.

The curfew is now in effect in downtown Los Angeles. Many streets across the area are quiet, but there are still many protesters who have lingered in the area. The police have used so-called less lethal munitions and chemical irritants at times in an effort to disperse protesters. Here’s what else to know: