"A racist post" didn't change anything. They're looking at the Republicans getting thoroughly trounced in every election and they're worried about their chances in the midterms.
This is just them taking something that isn't going to affect any policy at all and mildly complaining about it. They'll each do this with a few more non-mattering things this year, then go back to their constituents and proudly proclaim a weird mix of "See, I stood up to Trump, I'm independent, not part of the political establishment" as well as "I've been around enough to know the ropes and have connections, so you can trust me to get things done for you!"
Sadly, it'll work on the Facebook / Faux "News" crowd.
In the US: