Let's put this to rest. In 1992, George H. W. Bush, implemented the "Insurrection Act," which allowed "actual" federal troops to quell the riots in Los Angeles. Tanks didn't blow up people and buildings, flamethrowers didn't burn up the public and rioters, jet aircraft didn't strafe blacks or bomb them and ground troops didn't bayonet rioters. Fast forward to now. The "governor" of Minnesota, displeased with the Mayor of Minneapolis' response to rioters and looters (which by the way, has nothing to do with protesting, just criminal behavior), so the "governor" sent in the National Guard. The federal government has used the National Guard for fighting overseas, but in this case, it was in internal strife which fell on the governor to resolve. Again, there were no tanks blowing up property and people, no flamethrowers burning up rioters and looters, no jet aircraft or Apache attack helicopters strafing citizens and no citizens being bayonetted to death. Just enough force was used to squelch the criminal activity that was needed. That's not a tyrannical government (and it was a leftist governor that activated the Guard, which isn't the same as the federal troops).
Washington, D.C., isn't your normal city, it is a city of the federal government. All major federal agencies stem from there. We have many "federal buildings and monuments," thus it fell under the jurisdiction of the federal government agencies to step in and protect the structures. Again, the National Guard was called in, plus other federal agents to assist in protecting federal properties.
None of this is tyrannical. It's just preventing looting and rioting on federal property. The good thing is that when caught, those same rioters and looters will be tried in a federal court and the sentences they will be given are stiffer than what they would get in state courts. If they are sentenced to five years of incarceration, unlike state prisons where they can get one day off for one day of good behavior in state prison, in federal prison, they serve the entire five years (or whatever sentence is handed down) regardless of their behavior. Love it.
The Second Amendment was created so that your private citizens could form regulated militias and fight for their freedoms, should a tyrannical government take over. The only looming tyrannical government that is a threat to our Constitution and the Bill of Rights is the leftist Marxist political party calling itself the Democrat party. They've already made it clear that they want to get rid of the Second Amendment, end the Freedom of Speech by declaring any speech they don't like as hate speech and end Due Process. So, we gun owners aren't going to interfere with the Republican government trying to preserve our rights. We'll interfere when the left gets into power and starts taking away our freedoms listed in the Bill of Rights.