we will be joined by ron honberg from the national alliance on mental illness.er, a discussion with mark goldberg, host of "the foreign " from the global dispatch. ♪ >> c-span has live coverage of the 2020 presidential candidates at the iowa state fair starting thursday at 1:45 p.m. eastern with montana governor steve bullock, followed by former vice president joe biden. castro and beto o'rourke. governor jay inslee, senator, harris, senator amy klobuchar, senator kirsten gillibrand, senator elizabeth warren and senator cory booker -- senator la harris kamala harris. using thee on the go free c-span radio app. >> sunday night on q&a -- >> we were taken out of the hall in front of this mob of angry people. talks aboutinger being physically attacked in 2017 after an appearance by author charles murray on campus. >> at the end of your discussion, you left that room and went where and what happened? >> i don't really remember. much of it. i couldn't tell you what door we went out. hallre taken out of the and confronted this mob of angry people, some of whom were in