1933 Germany - Jews were denaturalised.... and then deportations began.
Trouble was, no country would have them... so they went to concentration camps.
As the numbers got unweildy, the every efficient Adolph Eichmann developed the final solution... a mass production, efficient method of eliminating the undesirable human detritus.
The logical steps are laid out - we have seen them before.
Trump has already been following the precursor steps, which achieved the NAZI rise to power in 1931/32.
Now he seeks his own Reichstag fire to declare an emergency, martial law, and solidify domestic control... (perhaps a nice war would achieve that)
Then the elimination of undesirables can proceed apace.
Nothing new here.