If someone is trying to sell you an antiracism training, it is fair to ask them what evidence they have it works, and what the program's theoretical basis is. If they can't answer either question, what possible reason do you have to believe their approach is effective?
There is a lot of grifting going on during a moment when people, understandably, want to know what they can do to help. Not all of it is intentional -- some people really think they're helping. But please don't turn off your brain out of a desire to feel like a good person.
There is basically NO proven approach. Some of the approaches widely circulating, I am almost positive, are likely to make things *worse* in a given school or workplace, simply by dint of how social psychology/human nature work. Frustrating to watch them explode in popularity.
A subset of these programs are designed, by making radical or mind-reading claims that many or most people disagree with, to induce negative emotional reactions in participants. Then, those negative reactions are taken as proof the program is needed. This is what cults do.
What's kinda amazing is that guidance that 30 seconds ago would have been seen as offensive and bizarre, if not racist -- "After a scary racist incident, Venmo $5 to distant black acquaintances" -- is now seen as good. This is fueled by hapless privileged white people. 
The other element of this is this Very Online thing of believing we need guidance/training/education about how to engage in basic interactions with others, that it can be reduced to simple rules under-socialized people can follow. It's all very depressing.
Me, antiracist: "Hey sorry bout the racism here's $5"
Classmate I haven't talked to in 10 years, trying to get his kid to take a nap: "who is this and why are you sending me money"
Classmate I haven't talked to in 10 years, trying to get his kid to take a nap: "who is this and why are you sending me money"
