Monarchy

The Queen of Hearts is alive and well. All subjects beware. Obey unconditionally, do only as she says and speak to only those on the approved list. If not, it will be off with your head.

Clarification: The Queen of Hearts always threatened to behead her subjects when they did not do as she commanded.

From Wikipedia: The Queen of Hearts is a character from the book Alice's Adventures in Wonderland by the writer and mathematician Lewis Carroll. She is a foul-tempered monarch, that Carroll himself pictured as "a blind fury", and who is quick to decree death sentences at the slightest offense. Her most famous line, one which she repeats often, is "Off with their heads!"