THE M-1 DOES MY TALKING! ARE YOU CAREFUL WHAT YOU SAY OR WRITE?" poster
The pattern
This still is filed under Negative headline.
Define
The first line is a warning, a refusal, or a negated claim. Something the reader cannot skim as praise.
Mechanism
Pattern interrupt. A negative is harder to slide past than a compliment. The payload must arrive immediately after the stop.
Verdict
The category is full of sunny claims
Why it works
It contrasts the lethal, necessary 'talking' of the rifle with the dangerous, unnecessary talking of gossip. The direct challenge 'Are you CAREFUL' makes the viewer accountable to the rugged soldier.
Steal this when
You want to shame people out of bad behavior by comparing it to the difficult, necessary work of the people they are supposed to be supporting.