We may never know why the brothers Tsarnaev performed their murderous actions at the Boston Marathon. These men, we imagine were sick and distant but before the murders they seemed to be one of us. How do small numbers of young men become radicalized? How do they lose their humanity and become killers without conscience, disaffected and apart? Some of these educated young people did evil things. Others did great things. Sometimes they were the same kids. Sometimes a young man will lose his social connections to family or friends. Sometimes they become young warriors for violent jihad to change leaders corrupt or committed to violence. Yes, some Muslim youths were deeply angered and upset with US wars in Iraq and Afghanistan, so upset by American actions in a third country they just had to go to Boylston Street and blow up people including Muslims who had nothing to do with it. What kind of madness is this? These young Muhadeen should weigh their ideals against the deaths of innocents. However, only a tiny handful ever expresses regrets. And we may never know why.