This probably comes as no surprise to the people on this forum, but women have an implicit bias against men. Also, men have an implicit bias against men. This is one of the reasons it's hard to get people to support men's rights, or even to eliminate what I see as obvious harmful behavior toward men and especially boys. Still, it's nice to have a study that shows how deep this goes, especially when arguing your point online.

https://www.centreformalepsychology.com/male-psychology-magazine-listings/landmark-research-study-finds-clear-evidence-of-pro-women/anti-men-bias

(Wasn't sure what flair to use.)