Jay-Z causes controversy by wearing gaudy medallion of 'Five Percent Nation' group who believe whites are 'wicked and weak' • The Brooklyn-born rapper wore a medallion representing the Five Percent Nation at a Nets game last week • One of the main tenets of the Nation of Islam offshoot is that white people are 'weak and wicked' and that black men hold the power of God • When asked if the medallion holds any importance to him, Jay-Z said: 'A little bit' • Jay-Z was spotted wearing the nation's symbol last year while giving radio interviews for his new album,...