“Laws can be changed,” said Fudge savagely.
“Of course they can,” said Dumbledore, inclining his head. “And you certainly seem to be making many changes, Cornelius. Why, in the few short weeks since I was asked to leave the Wizengamot, it has already become the practice to hold a full criminal trial to deal with a simple matter of underage magic!”
J.K Rowling “Harry Potter and the Order of the Phoenix”