Hogwarts didn't always have bathrooms. Before adopting Muggle plumbing methods in the eighteenth century, witches and wizards simply relieved themselves wherever they stood, and vanished the evidence.
Hogwarts didn't always have bathrooms. Before adopting Muggle plumbing methods in the eighteenth century, witches and wizards simply relieved themselves wherever they stood, and vanished the evidence.
It's not as though they didn't have a straight shoot out at the Ministry in both book 5 and 7.
But rather than making it about liberation and rebellion, each conflict had to revolve around securing the McGuffin Superweapon.