Not only an example. The psychological damage from this type of Dem/BLM glorified behavior, is worse than just learning something that later can get unlearned. It wires your nervous system quite physiologically. Your ability to find a sense of everyday peace even many years after having left her toxicity and even the environment too, is immensely damaged. Therapy can ofc teach him to not walk her path and find good strategies, but damage is done.
This functions the same way as direct childhood abuse, even if she never laid hands on him or even degraded him. It's ofc impossible that she doesn't do both regularly, so the situation is even more tragic.
Here in Denmark, anyone who displays themselves like this - their kids are taken away or are already in the process of it, cos it's broadly considered child abuse