Asked to and then playing the scapegoat for someone elses problem or mistake. (Sometimes without reguard to to the consequences). This is not to be taken likely as the ramifications could be dire or legally destructive to your life.

This is a tough, normally noble thing.

For further reference please see oliver north and the iran-contra affair

v. collectively or individually finding someone/something to blame for a problem, as opposed to brainstorming which connotes finding solutions to a problem

n. the act of finding someone/something to blame for a problem

(from a TV ad for HD television)