There are key differences between today and the 20th century that you are ignoring. Widely enforced digital ID not only makes it easier for them to identify who to genocide, it forces total compliance with the state, because if you do not fully comply, you risk death, imprisonment, or having your freedom and bank account revoked.
I mean surely then nations with little in the way of digital or personal ID are definitely immune to genocides and do not in fact make up the vast majority of extant genocides committed in recent years or throughout history...[1]
