Just picket the place. The signs should say THANKS KANYE.
I'd like to say that it is so wrong, but I'm not a fan of Starbucks, so "schadenfreude".
But it will help out the competition in a lot of locales, at least for the day, if not getting some percentage of them to gain new regular customers.
Pity that the "privileged" employees will have to suffer PC BS unrelated to the company's business.
Sit in the store with a MAGA hat and see how long before tehy hve you arrested. Document it. Get video.