In each of the situations listed, somebody was punished for speaking against racial equality, religious equality, or civil justice.
This is not an unbiased study, and it concludes by saying that "mid-level" administrators have too much power.
The study skipped the professor fired for observing that Muslims, Christians and Jews worship the same Creator; why wasn't that important?
The study also skipped anybody punished for asking for equality; this gets punished every day, especially in traditionally Republican states, but it's not mentioned.
This study is also focused on "mid-level" administrators; conservative governors try to change the course material in state colleges all the time, likewise parents; so there is a "high-level" problem and a "low-level" problem, but the article focuses on "mid-level".
It appears to me that if I wanted to teach or be a student, the author of this study would have no problem with me being banned from a school for being gay, for having a Catholic background, or for having served honorably in the military: the author would celebrate or at least ignore this, but he will protect as sacred the right of students and faculty to raise "all gays must die" banners: I perceive that the author is a Fox News viewer and that the article's basis is dishonest.