I would argue that every prior president at least respected the Constitution, democratic norms, and the peaceful transfer of power. If the ruling party cares more about their goals than democracy, what hope do we have?
These things were despicable but not an attack on the system itself. This time is different. I haven’t written American democracy off yet, but I wouldn’t bet the farm.
Those were the system. The core Americanness of American democracy is white supremacy, and there's a huge number of voters who will demand repression for other Americans. Usually defining them as "not Americans" along the way, as with the attack on birthright citizenship and green card holders.
Even if democracy survives this time round, the people who enabled its demise thus far won’t go anywhere. There are so many angry, misinformed and potentially violent fringe groups with easy access to weapons, it’s truly disgusting. And they’ll feel emboldened by how easy the fabric of society seems to come apart.
I have seen the culture on HN change in the ten years I have been a member. The people who defend Trump and his policies now would never have done so 10 years ago. It goes to show that the USA we remember doesn’t seem to exist anymore.