take the law into your own hands

Meaning

1. to do sth illegal in order to punish sb for doing sth wrong, instead of letting the police deal with them

In the movies · 1

• You can't take the law into your own hands.Batman Begins2005

From the same entry

• be a law unto yourself
• go to law
• law and order
• the law of averages
• the law of the jungle
• lay down the law
• there's no law against
• the letter of the law
• possession is nine tenths of the law
• the rule of law
• on the wrong side of the law