Our biggest threat to democracy is our own government in reality.
The only rights or freedoms we've ever lost or will lose will be because our government took them away from us. In short of a total invasion by a foriengn power and a total take over only our government can be a threat to our democracy.
And we have seen the current administration attempt to do with that with censorship, msm influence/control, proposed mandates, them trying to position backdoors with gun control, tipping the scales and unbalancing the system with large amounts of illegals, among other things.