When someone publicly makes claims about people and/or groups and doesn’t support them I see that as politically pissing on fences.

For example the Trump fans who simply post “Trump2020!” in articles about anything considered politically “left” in the US, or in places they consider liberal, or articles about the election…

It’s on the “left” too, but this is my example. I need a political label of disgust having to do with political dominance displays that have no actual substance. Racists have made primate related insults a challenging problem. I’ve no problem respecting that strategic political reality, I’m just making it explicit (the blog name is an experiment and I welcome opinions) . So dogs are the implication, sorry dogs.

The last person I used it on said I didn’t support my argument and had to point out that it was a label for political behavior. From there I overtly meet them at that level, their behavior let met do it. Their comment nothing but the basest expression of personal politics lets you be personal right back.
Do unto others as they give you licence to do unto them (I call it “the inverse golden rule”).