I think this sort of thing is a result of liberals trying to move farther left, but falling off a cliff because they have no understanding of class.
edit: I thought there was a whole thread, but to see the full context you have to go to the student's account and see the ensuing drama. This singular tweet is pretty fine on its own.
If you go to their twitter and look at the rest of the drama, the student is clearly in the wrong. I guess it's not so evident from this tweet alone.