If you hate (or fear) someone so much that you feel the need to advocate government to deal with them, you may not be on the side of liberty.
You probably ought to realize that the State is a bigger threat than anything you might want to use it against. It's like aiming a shotgun at your own head because you want to kill the fly on the other side of you. Using the State may seem like the only way, but it is ultimately suicidal in every case. Just don't.