Report him for threatening minors. If he is a mandated reporter, any violent behavior towards children, even verbal, is a serious offense and can lead to termination.

If you are a Michigan resident or anyone with college age or high school age children, call the university up and inform them you have taken them off your child's list of potential schools.

I will call and inform them that I refuse to write letters of recommendation for any student who has them on their list of application recipients.

We do not negotiate with domestic terrorists.