It's right there:
A post of him was deleted where he reported that a majority of arabic language comments in international media were celebrating the attack in Berlin on a Pride event, and were also celebrating the guy who weaponized his car. He says that this is a big, massive problem in that post.
He then just posted "The mods have deleted my previous comment, is that for real?" while citing the same comment again - this is what got him banned.
!yepowertrippinbastards@lemmy.dbzer0.com material.