What happens to people that try to fool the government?

People who try to fool the government are sent to an asylum.

Montag looked at the cards in his own hands. "I-I've been thinking. About the fire last week. About the man whose library we fixed. What happened to him?"

"They took him screaming off to the asylum"

"He. wasn't insane." Beatty arranged his cards quietly. "Any man's insane who thinks he can fool the Government and us."