WikiMedia and university gender studies programs have been proudly collaborating to introduce feminist bias into Wikipedia for many years. Every year gender studies departments across the globe organise a "Wiki-Edit-athon" with the support of WikiMedia. They edit articles and gang up to downvote other editors who disagree with their editing.

For info straight WikiMedia watch their youtube videos linked here.

https://humanity87.home.blog/2020/08/09/wikipedias-feminist-bias-meetings/

One blatant example is the topic of misandry. The Wikipedia page on Misandry downplays the harm of misandry and plays up the harm of misogyny.

https://en.wikipedia.org/wiki/Misandry

Too many people were citing evidence that misandry was harmful. These references kept being removed. Eventually the topic was locked so additions showing the harm of misandry cannot be made.

https://en.wikipedia.org/wiki/Special:MobileDiff/1029583333

The lock is renewed annually.