Well, ideally we could talk about things and listen to each other before it comes to protesting, but since that rarely happens in a dominance hierarchy, I'm just saying that it ought to be expected. Telling people to "be nicer" is not the answer.
I'll have a look at that story, but my position is that absolutely everyone engages in identity politics, whites, and white men no less than anyone else. There's a whole profession devoted to it known as lobbying. It only seems like marginalized people are doing something problematic because they are not historically the "core" citizens with the historical power to advocate for their own interests without it seeming out of line, because it's expected.
Edit: I’m part way through the article, and without going into a long dissertation on it, I’d say read this piece of mine as a response.