I'm using my free speech as permitted by the rules here, just like you are using your free speech.
Yesterday, I wanted to tell my husband to check out the guy's shirt but didn't want him to over hear me in case he was a nut job with a gun. The way the climate is now, I'm not sure I'd feel comfortable wearing a t-shirt with a liberal political message. Restaurants here are usually tuned into Faux News. I don't trust some of the Trump nuts. Most are probably harmless, but a creepy man with a gun, wearing a shirt with Trump's ugly face, implying that he never committed a crime, and he should be president is a bit off putting to me.