The scientific sciences are also more right wing, the more you go to the softer sciences where opinions are everything the more left the professors lean.

So your observation is just "left wing professors often work on unscientific subjects and therefore more often gets their department shut down". It has nothing to do with politics, if you had a department full of right wingers who called their blog posts "scientific papers" then I'd call for them to get shut down as well. Blogging is fine, just don't call it science or make university courses based on your blogs.