(someone's) blood is on (one's) hands(redirected from someone's blood is on one's hands)
(someone's) blood is on (one's) hands
One must bear the guilt or responsibility for someone's death or injury. You may have walked away from your drunk driving accident unscathed, but that poor boy's blood is on your hands. Blood is now on the police's hands after their crackdown on protesters turned violent.
Farlex Dictionary of Idioms. © 2015 Farlex, Inc, all rights reserved.