joe vasquez, kpix 5. >>> 4:41. a photo of michelle obama and former president george w. bush is going viral. we will talk about why, next. ,,,,,,,,,,,,,, obama hugging former president >>> in the middle of a presidential debate filled with hostility, a picture of first lady michelle obama hugging former president george w. bush is going viral. scott pelley has more on the special bond between the first two families. >> first lady michelle obama embracing former president george w. bush. at the opening of the national museum of african-american history and culture. they do have a special bond. the democratic obamas and the republican bushes. we saw it at the memorial service for the fallen dallas officers when mr. bush and mrs. obama held hands, and swayed to the music. and president obama has often expressed gratitude for the bush's kindness during the transition, including the advice the bush daughters gave his daughters. >> they told them to surround themselves with loyal friends, never stop doing what they love, and to slide down the banisters occasionally. >> by all