So, I wrote an answer for this question, which was deleted by @Philipp using his moderator powers. I do not believe that this was the correct course of action to take.
In that answer, I explained the background behind "White genocide" claims by right-wing protestors, and that the slogan carried by the left-wing protestor was a reference to those, and an explicit endorsement of White genocide. Even if you would argue that the genocide might not be happening, that doesn't mean that the left-wing protestor's slogan isn't an explicit endorsement of genocide, and thus an anti-White hate statement.
The only message I got from Philipp was "This is not a platform for paranoid right-wing propaganda.", and that's not what my post was about. You could argue that maybe the "White genocide" idea is paranoid, but my post was intended to be about explaining the background behind that paranoia. The closest thing that I got to "right-wing propaganda" was repeating a right-wing meme about how hateful of White people left-wing protestors can be - as can be seen in this particular case by the fact that the protestor is carrying a shield bearing a slogan about wanting to kill off ("replace") the White ethnic group - and I'd be willing to edit the answer to remove the quoted meme if that was why the Answer was deleted, likely replacing it with a general statement that the behavior is common enough that memes about it have been made, instead.
Additionally, there was also a comment that I'd left on another answer for that question that got deleted, which observed that a left-wing individual clearly misunderstood the meaning of the right-wing slogan she was mocking, since she seemed to be under the impression that the Jews themselves intended to replace White people, rather than them using other ethnic groups to replace White people; this comment was intended to improve the answer in question, by noting something that hadn't been noted in that answer, and which would have improved the answer if it had been included. The process of improving answers by leaving comments with suggestions on how to do so is the intended functionality of the comment system, so I'm not certain why my comment was deleted, since it wasn't conversational or off-topic.