“A well-regulated Militia, being necessary to the security of a free State, the right of the people to keep and bear Arms, shall not be infringed.”
Even the Constitution illuminates that certain rights require regulation. No infringement of the overall people. Regulation of individuals that have no business being near a "modern sporting rifle" (or even a semi-auto pistol) because they find shooting other humans for weird made-up reasons or no reason at all very satisfying even to the point of going to elementary schools, churches, movie theaters, restaurants and concerts to rack up a body count before a 'good guy with a gun' eventually tries to stop them.
But no worry, the politicians you claim to be infringing our rights by addressing this issue haven't been for quite some time. They have killed off effective mental health treatment, though.