In this issue: COMMENT "The Cost of College", by Nicholas Lemann: Is the higher-education bubble about to pop? THE FINANCIAL PAGE "Unequal Shares", by James Surowiecki: Facebook’s I.P.O. and dual-class structures. ANNALS OF POLITICS "Raging Arizona", by Kelefa Sanneh: A border state’s immigration wrangles. LETTER FROM KENYA "Violated Hopes", by Charlayne Hunter-Gault: Rape as a hate crime. A CRITIC AT LARGE "Easy Writers", by Arthur Krystal: In praise of guilty reading pleasures. THE CURRENT CINEMA "Strongmen", by David Denby: Reviews of The Dictator and The Intouchables.