If you remain attracted to group guilt as being valid, some thought games. Does someone white who migrates to america thereby adopt guilt for wrongs? Does that person become liable due to the move? What about someone black who migrates? What about their child? Should the child be guilty or half guilty? Should the tax system be adjusted to compensate? What about descendants of former slave owners who are not american citizens? What if their parent was disinherited along the way? How about for gender issues? Does a man inherit responsibility for past wrongs done to women?
If you accept group guilt or intergenerational guilt you are constructing a cast society, where people are defined by their lineage and physical characteristics, rather their actions as an individual. This entrenches social divisions and undermines individual agency and freedom. Western culture, nations and law are grounded in individual responsibility not group identity and are the better for it.