amy: joining us now is historian gerald horne.is author of two new books, "the counter-revolution of 1776: slave resistance and the origins of the united states of america" and "race to revolution: the u.s. and cuba during slavery and jim crow." he is a professor of history and afafrican american studies at te university of houston. we welcome you to democracy now! , gerald. can you start off by talking about this past week, from the killings of black men to the killings of the police officers in dallas? >> well, we should not seen these events as terribly surprising. first of all, you have a society , as president obama noted, is awash in weapons. second of all, we have unresolved issues of racism and inadequate discussion about the legacy of slavery and jim crow that helps to contribute to situation where black people are perceived as criminals by the police authorities, which inevitably leads to their slaughter, as you saw in louisiana and minnesota most recently. amy: i want to ask you about int scene of the protesters dallas