Use "stab in the back" in a sentence

1. Her refusal to support his campaign was a real stab in the back.

2. Stab in the back stab in back stab betray cheating patners hypocrisy backstabber knife in back office madness woman with knife behind Back stabbing in the back

3. NOTE: As I was writing this piece, I just saw that never-Trump conservative New York Times columnist Bret Stephens just posted an article entitled “Trump Contrives His Stab-In-The-Back Myth.” I guess conservatives like Stephens and progressive like me sometimes agree.