midnight Target: ...the Radical Left shouting down opponents is a much newer phenomenon...
Really? A. Hitler complained in 1924 of exactly the same disruprive shouting down tactics by the radical left.
Poor guy had to take the dictatorial control of the country and throw the radical left into prison just to be able to discuss politics with his buddies over the beer in peace and quiet... Fortunately most of those left had joined his nazi party by that time.
Seriously, Milton Friedman, J. Sax, etc. dedicate considerable part of their works to carefully and respectfully examining the ideas and views of their ideological opponents - with extensive quotes, etc. I do not believe any of those gentleman ever shouted down anyone in his life.
Same goes for P. Bauer, Murray, Hernstein and A. Jensen. All of them were shouted down and thrown stuff at when they tried to present their formulas, tables and charts in public.
It seems about half of any serious scientific work is dedicated to the opponents of whatever the idea discussed. It would seem the college students, especially those professing tolerance, divercity and rights, would appreciate the chance to get the first-hand knowlege of the opponent's thinking and exercise their beliefs at the same time.
miko