What it does is place the legal and proper framework for what government can and cannot do.Not a topic goes by dealing with guns when JonNC does not post how gun rights are an enumerated right in the Constitution - before addressing any other aspect of the question, as if that one observation is all that need be said.
It is true of every other right. Before government can act to limit my rights or yours, it has to look to the constitution. It is the legal document under which the government must operate.
Whatever else is said must fall into that framework.