The framers came up with a Constitution that allows people who distrust each other to work productively together in pursuit of their own happiness – but only if the principles of accountability, fairness, and constrained power are respected and enforced.
Things have changed between the time of the founding fathers and now. On the one hand, the USA now has an extremely well-armed military force, while most state and local governments have well-armed police forces, and all of those forces are under the control of elected civilian leaders. On the other hand, the USA has a far higher rate of gun deaths and mass shootings than most citizens are willing to accept. Whether and how things should be re-balanced are open questions suitable for respectful debate.