A Bangladeshi social activist pays his  last respects to slain US blogger of Bangladeshi origin and founder of the Mukto-Mona (Free-mind) blog site, Avijit Roy in Dhaka on March 6, 2015 after he was hacked to death by unidentified assailants in the Bangladeshi capital on February 26.  An FBI team has arrived in Dhaka to help investigate the American-Bangladeshi writers gruesome killing.  AFP PHOTO / Munir uz ZAMAN        (Photo credit should read MUNIR UZ ZAMAN/AFP/Getty Images)