I see that as a strong parallel to Jackson and Sharpton. They do not want the black populace to ever crawl out of their poverty and rise above the circumstance. Like crabs, when they sense that one of theirs is about to break away from their surroundings, they quickly drag them back into the bucket of complacency. The last thing that Jesse wants is for his people to become enlightened and educated. That would cut off his meal ticket.
Crabs are an unusual breed of creatures.
They are selfish and do not care for each other at all. This is the same BS that Jesse Jackson preaches amongst the brethren. I would like to see a poll conducted among the black population regarding the love or loathe of Jesse. Jesse loves Jesse, and he never met a camera that he didn't like. Ditto for Al Sharpton.