Crowds have protested billionaire Elon Musk’s purge of the U.S. government under President Donald Trump outside Tesla dealerships throughout the U.S. and in some cities in Europe.

The plan for a day of mass demonstrations follows a series of violent incidents. Anti-Musk activists have been accused of throwing Molotov cocktails at Tesla facilities in Colorado, Nevada and Oregon and defacing Tesla vehicles there, and on Monday, authorities said they found multiple “ incendiary devices ” at a Tesla location in Texas.