I pointed out #4 to illustrate that his claim of a pervasive trend of Conservative persecution wasn't consistent with the state of affairs in the United States.

I disagree with your premise; termination for political activity on-the-job is easily justifiable. I doubt you want to hear non-stop tirades from a PETA activist coworker.

I think your criticism of #2 is facile; which policies in particular are vague? Every corporate anti-discrimination policy I've ever encountered was essentially "don't discriminate against people in a way that will get us in trouble with the Feds."