so if my parent were criminals it's my fault and i can't vote?
YES.
In East Asian culture, the idea of vengeance is very profound. A baby child of a criminal may spend all his life rising a daughter to be a beautiful assassin to seduce and kill the Emperor. That’s just an example. Even after decades or generations of inaction, a devastating revenge can happen. Families, as in, anyone who bears the same family name, wives included, often act as a singular unit. Just like the Five Eyes, or NATO to a much lessor extent.
This is why in East Asia, criminals are killed with all their spouses, children, parents, siblings, servants and maids. This has only been relaxed after the WWII after many millennials.
Children of criminals cannot access sensitive part of a society is a residual policy of that long tradition. Voting and party membership is only a tiny part of that restriction.
They can’t become public servants and they can’t join the police or the military, etc.
They can’t get passport very easily, and are constantly screened.
They may be going through extra scrutiny when leaving one city to the other, or flying, or taking a train.
They can’t be admitted into selective university programs.
They can’t join research facilities and defence related industries, like going to Mars.
They also can’t become teachers, professors, doctors, etc.
They cannot incorporate serious businesses.
Basically, anything related to public security and trust.
They can be peasants or small tradesmen, etc.
So, when you commit a crime you have to think of your (extended) families and would be families. That has profound implications to all of them for generations.