Please suggest good colleges for robust political debate

This exchange makes me realize there are limits to my interest in vigorous debate of all issues. Yes, America is a healthier democracy if we can civily debate financial deregulation, abortion, and military intervention. Some of the examples of problematic topics mentioned here seem like the should be taboo in civilized society. Women’s right to vote, birthright citizenship, and outlawing racial segregation seem to me issues we have rightfully left in the past.