Have they told you they don’t like to argue about politics because there’s ‘nothing they can do’...
But I learned my lesson back in the 1980's. I got in a discussion with a liberal co-worker about Ronald Reagan. I can accept that he didn't care for Reagan. But he said some very crude and vulgar things about the man. I darn near lost my temper and hit him. What a career-ender that would have been!
So I no longer engage in any political discussions with any of them. I either change the topic to sports, or walk away.