It’s classic communism. Bring down capitalism by engorging the lumpenproletariat. Then completely grab the levers of power and wealth.
They sell it as “for the workers” (now it’s “for the poor”, or “victims of injustice”, or whatever excuse the public will fall for at the time)
The US left/socialist/communists could not succeed by mobilizing the American proletariat. Our workers/middle class want nothing to do with them. So the leftist and socialists are busy importing third world lumpen proletariat to change the political system in their favor