This question is exactly the reason why none of my social media is linked to my legal name, and everything is on private. No one within my professional circle have any idea that I go by BattleAxeGoatFuck on Reddit!
But the answer the question, I was doing a social media background check on a potential employee & came across their colourful anti-feminist, incel blog which essentially said women belong in the home & should be subservient to men and blah blah blah. Never deleted a resume so quickly.