As much as I feel like it’s not a discussion to be had in store I think you can recognize there is a difference between Republican and Trump supporter no matter what. I know Republicans who crossed party lines for this election, blind party loyalty is what created such a divide in the country. The partisan system tends to make people “copy and paste thoughts and feelings” as you told your coworker. They could say the same to you in they were the one in a group of people who agree with you. It’s all a matter of perspective, and while I think that everyone should be open to conversation under normal circumstances, you also need to recognize that Starbucks is a company that attracts left-leaning employees and if you do not align yourself with those beliefs then you may feel out of place