provocative. >> historian robert dallek, thank you so much. you can watch "the sixties," tonight at 9:00 p.m. only on cnn. coming up, mayor rahm emanuel talks about his latest moves to lower the crime rate in chicago. plus, the mental scars of war etched in his mind 70 years later. one world war ii veteran travels back in time to the moment he was dropped from the sky behind enemy lines in normandy, france. his story coming up ahead.