Presumably in response to the violent protests by Donald Trump supporters at the United States Capitol today, the Boston Celtics have walked off the court of tonight's game against the Miami Heat in Miami:
The game was slated to tip off at 7:30 ET. This is not unprecedented in the NBA. The Milwaukee Bucks declined to take the court for a playoff game against the Orlando Magic after Jacob Blake was shot by police in Kenosha. It will be worth monitoring to see what the NBA's institutional response, if anything, will be to this decision by the Boston Celtics.
Update: Reportedly, the game is still expected to go on as scheduled:
Update II: Here is the joint statement issued by the Celtics and Heat: