John Kerry can claim to be "fascinated" by hip-hop. He can say he hopes to succeed Bill Clinton as our second "black president." But despite the naked pandering, Kerry has failed to connect with voters in the hip-hop generation — that is, according to the guy who invented the term. Author and activist Bakari Kitwana's take on Kerry's candidacy should be a sobering one for Democrats: Not only does it suggest a loss in November, it also forecasts the defection of young black voters from the party they believe has long taken them for granted. "Historically, just watching the constant...