The larger question is why aren't we applying the same criteria to those who participated in lynchings. Its far easier than tracking down former Nazis. If they were there, they are an accessory to murder in the eyes of the law.
Even if we can't get a conviction, we can at least put them on the Jumbotron and f*ck up that family name FOREVER. It will be in the public record that them or their family member participated in it. Can't erase or nuance that away. And we can use the Jews going after people like some teenager from the local town who swept floors at a death camp but is now 90 and convicted as a counter for 'That was years ago, they didn't participate in it' (shout out to Jerry Jones). We include the ones who were out there stopping Blacks from voting or going to schools as well to publicly shame.
There is enough technology and information to get the names of damn near all of these folks. Again, its much easier to find out these people than it is to catch former Nazis.
Secondary question is if the Jewish groups are so hell bent on finding former Nazis, I notice that they have no comment about finding those involved in lynchings. It's not their fight BUT like that caller to Tariq, about how much Jews helped Blacks in Civil Rights, okay, use that same energy to help find these folks.