Unfortunately, in many cases students have no choice but take some courses such as these, as they are requirements for any degree and all of the faculty members are stark raving leftist moonbats. In those cases, the student has a choice to make - keep his/her mouth shut, regurgitate the left wing propaganda and get out with the easy A, or challenge the professor and resign himself/herself to a lower grade, or even a failing grade.
That happened to my son in his first year Political Science class; despite being warned by me in advance to keep his thoughts to himself, he evidently had enough the day the professor spend the entire period telling these students just how to apply for aid since they were all so poor and had no income, never mind their parents were footing the bill!
F.
Even at Duke, I think there are a few good professors, as there still are at Princeton and Yale, and even at Harvard Law School.
I went to Harvard back in the 50s. Most of the faculty were liberals, but I chose my courses carefully and enjoyed almost all of them. Even the required courses offered a spectrum of faculty. I suppose things are worse, now, and it might be hard to stay clear of all the bad professors.