They already exist. They're usually found in law, business, or theology departments (though not all professors in those departments are conservatives). They also exist in departments that don't require you to apply your critical thinking skills to social issues, such as maths, IT or engineering. You wouldn't know whether your professors in those subjects are rightists, conservatives, liberals or leftists though, because politics doesn't actually ever come up in classes that aren't related to societal issues. The only way you'd find out is if a professor is obviously biased against women and/or minorities, which does happen sometimes. The people in the original post don't care about any of this though, the outrage is the entire point and the truth doesn't matter.