o'brien about his new book "we shall not be moved: the jackson woolworth's sit-in and the movement it inspired". please tell us how you got into this project. >> i got into this project when i saw this photograph at the martin luther king center in atlanta in 1992 and realized this was an iconic representation and i knew the woman at the center of that photograph. i had met her 20 years before in arlington, va. when i was a playground director. and in the context of all of those iconic civil rights at the king center. a story that needs to be told, so i decided at that moment, and find out more about him. >> do you recognize her in the picture when you first saw it would did she talk to you about this experience? >> i recognized her because her children -- my mom is in a famous photograph. i didn't understand how significant that photo was until i saw it in context. >> what did you learn from her about the civil rights movement you hadn't known before? >> what was interesting is she was the southern white woman who risked it all to feed her family, her involvement in the civil rights