Regarding the Call by Some like Maxine Waters to deny Service to Trump Executive Dept. Employees or Other Trump Supporters. I stand by Any American's Right to Serve Whom they Choose, except for reasons that the person being targeted has No Control Over, what they were born with such as Skin Color! (Homosexuals are born with One Gender, It is in their genes)
But once refusal to serve goes beyond just turning away, but rather is edging on outright Harassment in Some Manner beyond just expressing one's 'Political Judgement' with 'free speech', that is Illegal and can be countered by Charges being brought and Prosecution for Harassment !