What is Lupe Fiasco's lyrics about?

Lupe is one of the best rappers out there, all of his rap has a message in it that doesn't have to do with "blunts, bitches and 40's" (not intending to be offensive), his rap is about like everything that can, has, and will go bad to someone sometime with the current state of the world, hes not saying it will but hes saying if it doesnt change soon that were all screwed