Earlier quoted context omitted.
it does negate people are free to have red flags that cause them to cut ties with other people because you are not free to have whatever red flags you want. if you see red flags you should evaluate them and make sure they are not just prejudice.
you're actually free to be racist in your personal life. nobody will imprison you.
remember that joke about a someone in an airplane sitting next to a black person, complaining loudly that they want to sit somewhere else. the stewardess comes over and says: "my apologies, it is of course unacceptable that you should have to sit next to such an obnoxious person". and then invites the black person into first class to everyones applause.