Why not? I suggest you look back at the bloody open mass grave that was the 20th century. First comes the secret policeman’s cry of the need for extra judicial powers in the time of crisis.
Then from the self serving politicians come “enabling acts” these are followed by folks being snatched off the streets & disappeared in the name of state security.
Then the announcement of special institutions for the care & custody of persons unable to fit in with the new political reality ( that’s the mission statement for Dachau Concentration camp)
Then come the final solutions & you find yourself standing at the edge of a mass grave. We have seen this around the globe & on all of the continents .
So yes it CAN happen here if we the people let it ! GET INVOLVED!!!The life you save just might be your own.
Sorry, I was being sarcastic. There is an old book by that name.