Mao still has them beat. What is it, upwards of 60 million killed by Mao in the cultural revolution and Great Leap Forward.
The only reason that the U.S. did not contribute to the Democide of the 20th century, 200 million dead, is 2A.
But the U.S. has all the other infrastructure necessary. FEMA camps, a large prison system with the highest per capita imprisonment rate in the world, federal police state agencies under control of deep state and with no real control by the public.
BTW, I don’t include the CBP and agencies that protect us at the border. They are carrying out a constitutional responsibility. I’m talking about the ones that attempted a coup and generally harass US citizens.