Except if you need to import "revolutionary subjects" because your native workers just can't be arsed to lynch the capitalists. The left has long been in love with the third worlders, because they are the perfect disenfranchised victims over which they can agonize in public while planning to use them to disrupt the social peace and stability of the host nation.
For one thing we are not in power to be able to import anyone, it is the right who are in power. Secondly even if we wanted to import revolutionary subjects we not be importing the most right wing people on earth from the most right wing places on earth.
No one on the left thinks importing these people makes revolution more likely, they hate socialism, they love, religion, they don't unionise at anything like the rate of the natives and they have a far more entrepreneurial pro business attitude than the natives (at least in the UK).
Your conspiracy theory is bizarre. They left are the last people who would want to import these class enemies.
Some people are nobody's enemies but their own.
"The IDF is retarded" - Zionist Nationalist