Seems he is willfully and blatantly inciting rioting and breaking the law. He needs to be arrested.
He should be arrested because people may listen to him and end up making a bad situation worse. This is not the time to become extra stupid.
He continues because he knows no one will do anything about it. I would love to see people like him be forced to follow the same laws the rest of us do. Since the police are part of the government, I would assume that calling for the destruction of a government building ans the subsequent destruction of those buildings would be a big deal. It bewilders me that no one has slapped cuffs on these people.
They need to build massive Super-Max prisons in North Alaska to house these people. They are a danger to society and have shown they cannot behave within the boundaries of a civilized society. When the prisons fill, built more and call it a jobs program.