After accepting the Democratic Party’s nomination to be its presidential candidate, Sen. Barack Obama didn’t luxuriate too long in the mile-high celebration in Denver last Thursday. The country’s first African-American to lead a major party’s quest for the White House had to respond immediately to Sen. John McCain’s vice presidential selection, which to some extent he anticipated in his acceptance speech. “I don’t believe that Sen.McCain doesn’t care what’s going on in the lives of Americans,” Obama told more than 80,000 spectators at Invesco Field. “I just think he doesn’t know.” Obama was alluding to McCain’s inability “to get it” when it comes to his proposing “hundreds of billions in tax