Your browser does not support the iframe HTML tag. Try viewing this in a modern browser like Chrome, Safari, Firefox or Internet Explorer 9 or later. BOSTON — His life on the line, Dzhokhar Tsarnaev went on trial Wednesday in the Boston Marathon bombing, with prosecutors saying he planted explosives specifically designed to “tear people apart and create a bloody spectacle.” “He believed that he was a soldier in a holy war against Americans,” Assistant U.S. Attorney …