The first duty of any government is to establish public order and safety, ideally with popular support. In constitutional democracies, we have well-defined procedures to establish that order, determine its content (such the speed limit or right to carry a weapon), proper ways to enforce it, and penalties for violating it. In the United States, we have one additional constraint, a fundamentally important one: personal rights, such as freedom of speech and religion, cannot be overridden, even by large majorities.