Asshole Victim: The victims of the Holy Vehm are largely paedophiles. Although they were tricked by Cardinal Richards into targeting non-paedophiles, largely people who have been a problem to his money laundering.
When they find out what Cardinal Richards has been doing, they target him too
The Atoner: The Holy Vehm is comprised of paedophiles who are castrated and they hunt down other paedophiles.
Cruel and Unusual Death: The methods of the Holy Vehm are pretty gruesome. One of their ways of punishing their victims is pouring molten lead down their throats.