Values in a free society are accepted voluntarily, not through coercion, and certainly not by law... every time we write a law to control private behavior, we imply that somebody has to arrive with a gun, because if you desecrate the flag, you have to punish that person. So how do you do that? You send an agent of the government, perhaps an employee of the Bureau of Alcohol, Tobacco and Flags, to arrest him. This is in many ways patriotism with a gun – if your actions do not fit the official definition of a "patriot," we will send somebody to arrest you.