I share the irritation expressed here, especially as I have that exact slogan on a bumper sticker on the back of my 4WD and I'm keeeping it there.
Racist used to be a word used to describe those who had prejudices against others because of the colour of their skin or ethnic backgound.
Now, it is used to describe anything that I say that the politically correct, tree-hugging, sad little lefties disagree with.
It's very common in any references to Muslims. Islam is a religion, not a race. Comments about Islam are not racist. Dunno what they are. Religionist?
Cheers, Tony