Outcasts and thugs in the Egyptian revolution

This post from last January by Ahmed Badawi, which opens with a vivid description of Egyptian street children (of whom there are approximately a million, he says), is still worth reading a year later, I think. (I learned of it because it is quoted in the opening of an article in the current issue of Am. Pol. Sci. Rev. -- an article which, as it happens, has nothing directly to do with Egypt.)