Everyone please note that he advocates the use of violence to destroy property in his first answer in this interview. That should be enough to fire him.
http://www.colorado.edu/EthnicStudies/faculty/w_churchill.html
The Department of Ethnic Studies
Ketchum 30, Campus Box 339
University of Colorado, Boulder
Phone: 303-492-8852
Fax: 303-492-7799
E-mail
Ethnic.Studies@Colorado.EDU
That should be enough to imprision him.
Advocating the violent overthrow of the government is a crime, IIRC.