"Burn the House to kill the Mouse"
A) To punish the whole group harshly because someone isn't telling the truth, especially for a minor issue.
B) To handle a situation by prohibiting an action at whole in order to solve a minor issue.
C) Eliminate a good thing in its entirety simply to solve a minor, solvable, or insignificant problem.
Earl: My mom decided to stop buying hot chocolate just because someone didn't claim their dirty cup.
Mark: Tsk, "burn-the-house" mentality.