Look at his tweets. After someone asked on Twitter if we could see the fire from space, Jim Carrey responded with a "BlackLivesMatter" tweet and fists emojis raised.
That shows his support for the burning of cities "in the name of justice."
The "stop the steal" support had nothing to do with the capital riots. If someone posted a capital riots tweet and asked if we see the rioting and someone else responded by saying "stop the steal," then I would condemn that as well. However, I haven't seen any tweets like that, so I don't.