during hunter gatherer and prehistoric times, our gilad stella's that the -- archaeologists tell us thatomicide was the main form of death. host: what led you to say this? guest: the pittsburgh synagogue shooting. tax -- attempted bombing bomb attacks. people say this kind of thing does not happen in america. it happens a lot. our sensedo more with of being human them with our politics. you said that at least those readers are well served to on hearing of last weeks but frick synagogue murders, said to themselves yes but how does this ?ffect the washington post he wrote a column saying that this is not the america i recognize. i just did not know how he could find the life of our country from the beginning to today, there is a history of showing up and killing defenseless people. whether it was native americans. for the french and english fighting each other. these mass shootings, we make it easy for these things to happen, but they obviously come from human nature. homicidal,any ways a insane species toward each other. host: had a we make these things easy to happen? guest: anyone can g