Freedom to differ is not limited to things that do not matter mush. That would be a mere shadow of freedom. The test of its substance is the right to differ as to things that touch the heart of the existing order.
“I'm having as much fun today as I did when I made $55 a week, because it is as much fun.”
“Before you can read, you know the difference between a story and reality. And, of course, by the time you're old enough to do any real damage with an Uzi, you've learned that difference.”