This was just before she announced her candidacy, I saw some interesting posts on Reddit. I can't say for certain what exactly happened but it was just super fishy.

Some further reading : https://old.reddit.com/r/neoliberal/comments/gni8t5/using_wi...

https://theintercept.com/2020/07/02/kamala-harris-wikipedia/

https://old.reddit.com/r/wikipedia/comments/hk6eo3/kamala_ha... (check other discussions also)

I hope that gives a good starting point.

PS: I don't have a horse in this race, I just know my trust in wikipedia was shaken.

The moderation team constantly admonished the person making the edits, eventually ruling they had a conflict of interest and were not allowed to edit posts about Harris and some other politicians. They acted slower than fast paced politics, but ultimately seemed to do the right things.