At event in Washington, Pennsylvania, Obama says he's "amused" at being labeled an elitist after "bitter" remarks. Click above for video.
Notes he was raised by a single mother, and his wife also comes from humble means. "That's when you know we're in political silly season.''
Denies that attacks against him bear racial overtones.
Also Tuesday: Marvels at "fuss" over his remarks, says his words are being misunderstood.
