Nazi propaganda with elf ears

You may be playing the wrong game, at the wrong table, with the wrong group if …

That one player, who you’ve already had a side conversation about with the DM due to fear they seem to hint they’re close to going full real-world racist any time Vistani are mentioned and misogynist about half the planet any time women are mentioned at the table, thinks it is funny to post to the group’s chat an image of actual racist Nazi propaganda with elf ears drawn on and they think that’s “fine because it’s about D&D”.