The crux of DEI is that if you are in the majority then you must admit to wrongdoing that there's no actual proof of you commiting and then endlessly defend yourself from accusations of it by apparatchiks. It's also how a communist struggle session works. You're guilty until proven innocent based on mob reinforced pseudoscience prosecuted by "intellectual" political actors (criminals).
The main pseudoscientific concept is "implicit bias." This is basically the notion that if you're in the majority then you're automatically biased even though you may have never done anything provably biased in your life. You have to simply admit that this is the case due to who you are and where you grew up and abide by whatever behavioral training "guidelines" (absurd rules) are doled out to you by an authoritative body. You aren't allowed to question any of it or there will be negative consequences for you. Of course this isn't how actual reality works and it's very easy to expose it as a scam by asking a simple question:
If there's no proof of me exhibiting biased actions but I'm still guilty of being biased then how do I prove that I'm not a biased person?
Bottom line is that you can't, and that's the point. You cannot prove a negative. Once you admit to being guilty of something that there's no actual proof of then there's no limit to what the authorities accusing you can require you to do to atone for it. You can be made to jump through endless hoops while being constantly told you're not doing enough to atone for your imaginary transgressions.
This is how communists and scammers (same thing) subdue a person and extract endless concessions from them into infinity while they psychologically break them. It's one of the oldest guilt trip scam methods there is and it's been institutionalized in the US by the left.