And the proud descendants of survivors of the Holocaust have made an entire industry out of this identity. What about the oppressors? Is it helpful do you think to take on board the guilt or not?

Yes outside of the group or tribe the individual will die. Trouble is we now live in cities and can survive happily on our own or more accurately with the support of neighbours who aren't the same as us. The tribal identities are deliberately formed and stirred up online.

I did not give myself the label Buddhist. I don't have to, and don't, accept anything anyone calling themselves Buddhist says or does.