Indeed. One single racist encounter of mine ruined my past 2 decades. I can’t help but think about it all the time till this day. It’s honestly wondrous how a simple insult of 2 words could destabilize my mental health and even pushed me over the tide to harming myself seriously once, thankfully I was rushed to the hospital fast. I’m still getting nightmares every other day, the blurry face of that stranger waking me up in cold sweats (I couldn’t properly see her because it was night). I even got recently diagnosed with terminal cancer due to chronic stress, and my obesity didn’t get any better since the incident. All because some random stranger shouted me 2 random words at some random hour of the night on some random street.

Do an s/racist/homophobic/ and you have a justification for being a jerk to muslim immigrants.

While your statement, put that generally, is certainly true, i wonder if you're familiar with leftism in Germany or in Europe in general (honest question). Antiracism and Antifascism are almost part of the core DNA of many of these circles or at least their self-perception. Doesn't mean that they necessarily live up it, of course. However, the term "left" means something quite different in Europe than compared to the popular usage of that term in the US where, i believe, a large chunk of the audience here is based.

For real, plenty of authoritarian leftists in the world who think the only path to socialism is through an autocracy with a heavy sprinkle of ethnic nationalism. But I think the commenter meant the more lib-left in europe, the kind who would be friends with anarchists.