One man hurt so many people, and he could not have done it without the many silent approvals from peers. The people he hurt might have been spared if his peers had done the tough thing and stopped him. That failure cost lives, as it so often does when we stay silent in the face of corruption.
Not everyone is cut out for calling people out on unacceptable behavior. That’s OK; don’t take a position where lives depend on it, though. Accepting power means accepting that duty.