The Act of Shunning

I completely understand wanting to kick people who work for the current administration out of your place of business.They are amoral liars who I would not want to share a meal with, be near in a public venue, or serve them.  But doing so plays right into their hands.  How is this different from not serving them if they were black or gay?  They will play it for all that it is worth, despite their support for the bakery that didn't want to serve a gay couple, because they are all about lying, remember?  Consistency is just really not in their wheel house.
So instead I think we ignore them.  Really ignore them.  Move tables yourself, or leave the restaurant if it makes you ill to sit next to them.  But I would argue that refusing to see them when they are right in front of you is the appropriate response.  They are dead to you.  You cannot see them.  You will not react, because they are nothing to you. Their moral turpitude renders them invisible.  Literally turn the other cheek, and close your eyes to them.