How about No Trump Supporters at the lunch counter? Or Trump Supporters sit in the back of the bus? Or Trump Supporters use separate water fountains?
Didn’t many people die to end segregation?
There’s a difference.
If you discriminate against someone over something they were born with, (outside of mental disabilities as they pertain to some jobs,etc) you’re a P.O.S. in my opinion, and hopefully both the whole weight of the state and the wrath of the mob makes your life short and miserable. OTOH if you wish to discriminate against somebody based on their life choices such as politics or religion, fine by me. YMMV
Don’t feel too bad, I don’t think many Trump supporters loiter in Starbucks.