Tsarnaev guilty of all 30 counts in Boston bombing
Ann O'Neill
Tamerlan downloaded the jihadist material urging young men to wage holy war against the infidels while Jahar spent most of his time on Facebook, Clarke said.
['Tamerlan', 'downloaded', 'the', 'jihadist', 'material', 'urging', 'young', 'men', 'to', 'wage', 'holy', 'war', 'against', 'the', 'infidels', 'while', 'Jahar', 'spent', 'most', 'of', 'his', 'time', 'on', 'Facebook,', 'Clarke', 'said.']