Well I'm not advocating for the destruction of your forum.
I think that if Fascism is true, shouldn't the forums be more open so others can come and hear what the Fascists have to say?
You're isolating yourself in a "safe space", where people who identify with the thing you identify with are allowed, and opposition is seen as a problem and needs to be removed immediately. You have no difference from the far left, wishing to start a Revolution against the enemy, destroy a non-existing oppressor, and everything will then be hunky-dory.
Your putting yourself in an intellectual ghetto. The walls close in, and less and less are allowed in, until its just you. Because all movements are hijacked by radicals.