are times when destiny and freedom come together in a single moment, and that was as it was in appomattoxduring the civil war, and so it was in selma. johnson is welcoming a black-led movement, from the revolution to the civil war, but to the vanguard of it, a non-violent movement, saying this is showing us what our principles mean, and that is a very, very profound and radical memory, and i think people want to forget that as much as they want to sanitize martin luther king. tavis: yes. tell us about the 18. you have whittled them down. you picked 18 historical moments that basically turned this country during the civil rights era. i know we cannot go through all of them. my question i guess is how you settled on these 18 monumental moments in our history. >> well, first of all, i have to say that since i had to eliminate 95% of what i wrote, there was a lot of blood on the floor, and it was not easy. what i tried to do was to pick moments that delivered the fall span of this transformative era, when movement begin the watchword of politics. when movement became the watchword of politics