The problem is not the number of extremist students, its administrators that need to grow a back bone. A year or two ago a bunch of black kids on the school football team (it may have been a historically black college - I can't remember), threatened to stop playing unless the administration gave in to some list of demands they presented. The correct response would have been, "OK, let us know how that works out for you." Instead the admins surrendered to them.
I live in Washington state I've also been following the dust up down there. Frankly, that school is a waste of time. Here's a good article that just appeared recently:
The result is a college degree pretty much don't mean anything anymore except you had rich parents.
Here's a local joke:
How do you get an Evergreen student to take a shower?
Hide Mom and Dad's credit card under the soap.