If the only real goal put down on paper is to hire x% black people and y% brown people and reduce z% of white people under some fuzzy equality rubric its no surprise these positions attract people who have ideologically compatible beliefs.
There has been a small collection of black/brown power radical organisations in California for over 50 years. There views are openly racist and have anti white, anti European, anti Colonial America sentiments. These diversity jobs are a magnet for people with that mindset who live every day with there race on there sleeve. When they get in they can twist whatever mandate there is to promote there own agenda and beliefs.
The sheltered Ivy league set who runs these companies have no street smarts or experience with race politics in California. So you end up with what we have now with genuinely nasty ideologues hired into these organisations and they eventually do lots of damage.