You're comparing apples and oranges. If there was institutional murder and fraud then your comparison might make some sense.
If there there was institutional murder, say every left-handed person was killed at birth, and you did nothing about it because you're right handed then he's claiming you're actively part of that institutional murder.
While I don't necessarily agree, there are differences between the types which you are ignoring
True, however having an institution against criminals convicted of capital offences is still an apples and oranges comparison to racism/sexism. No one is born a murderer.
