The majority of these Communists are not Middle Eastern. Many are white and a couple have Jewish surnames. Palestine is just another excuse for them to destroy America. Like that West Point graduate of a few years ago who displayed the slogan, Communism Will Win, inside his hat, they are committed to one world, socialist tyranny. They likely are "red diaper babies", coming from leftist families. Their grandparents may have been in the antiwar protests of the 1960s and 1970s. They mostly don't appear to be drug addled, self-abusing types. After graduation, they can find employment in universities, nonprofits, and left leaning corporations.
This is why the Trump Administration needs to attack the leftist networks of tax free foundations, educational institutions, the legacy media, etc.