I mean, you can question his source. I only focus on the main point that has a valid argument and not assumptions. I mean, there is probably an article accusing them of being white supremacists, I didn't bother to look for one because 1) white supremacist is not a crime, violence they may do is a crime, but never thinking you are better than someone else a crime in united states. 2) is an assumption. It could be that the author of this meme does like to exaggerate some things. But I do agree with you, the white supremacists part could have been left out, it does not add any value, just what he had in the subject was good enough, and that is what bothers you, so you go on nick picking at the whole meme to find flaws.
While you may think there is no such thing as transgenderism (transgender) evidently there is https://en.wikipedia.org/wiki/Transgender_history