Why should anyone be arrested for burning a book unless it was someone else's and being burned without their permission?

I have a right to burn any of my books when and where I want and I support the right of anyone else to do the same.

I expect antifasicts welcome police intervention though. They always were more fascist than anyone else, hating freedom whenever it is enjoyed in a way of which they disapprove.

Yeah the Nazis and the Inquisition also loved burning books. They also loved freedom too.