President Obama wants white Americans to understand why blacks are so angry over George Zimmerman's acquittal in the killing of Trayvon Martin. Polls show 51% of whites approve the verdict while almost 90% of blacks disapprove — so on Friday, the President got personal about stereotyping and fear. Can whites really "feel the pain?" Are we talking honestly about race for the first time in years, or is the so-called "national conversation" all too familiar? Does it create false expectations of healing, when it's really a debate that opens old wounds?