But doesn't quite have the force of
"Use the Nukes"...
Or, even better:
Drink your Ovaltine..
Here are a few that would be shocking to the author and have significant meaning to any Replayer, a grandchild of this generation. Sorry so morbid.
"Freedom through sacrifice"
"Freedom isn't free"
"Teach children genocide"
"Mercifully euthanize progeny"
"Liberty or death"
"Euthanasia spares suffering"
"Nuke'em for morbid"