A comment about Obama when he was a teenager

Last class we read a fragment from Obama's book (Dream from my father) which shows other face about this important character.
His life not always was as successful as it is now. In his childhood and teenage Obama had to pass through a lot of discriminative experiences for being black or, as white folks used to call him, "nigger". Moreover, because of personals problems, he started taking drugs like marihuana. (to be continued)