This is horrible. But people do horrible things when their children are taken away from them. Who's fault is it that people's children are taken away from them?
This is like watching somebody pouring petrol onto a fire, warning them to stop, and then watching helplessly as they get burned to death in the blaze.
Stop treating fathers like shit, like utter and total shit, and you will see less of this happening.
Go ahead, tell me I am blaming the victims. I am actually blaming at least one of the victims, that would be the mother. What in the HELL were you thinking, to deny a parent access to his children for no good reason? Were you a psychopath? You certainly turned your partner into one.