Typically, in order to be employed at a college, you have to be smart and aware of the world. This qualification disqualifies basically all conservatives.
There are real people, even smart people, on the other team. They have thoughts, kids, impressive degrees, goals unrelated to politics. They enjoy sunshine and hiking. They think they're doing what they're doing for good reasons. They believe themselves to be good people. They might even believe you to be a good person.
As should be more widely known, this is a bad start to actually being good people.