Let me give you an analogy: Someone keeps blaring an airhorn outside your window at 4am. It's making it difficult for you to sleep. The government, in their bountiful wisdom, decides to hold an emergency meeting, and agrees to pass a law that people need to show an ID to buy an airhorn. You're appalled. This is an invasion of privacy! You protest outside of city hall. You try to get some of your neighbors onboard, but find that they're already protesting! Their protest is demanding that the government do something about the annoying airhorns.