Avijit Roy was a Bangladeshi-American engineer, online activist, writer and blogger known for creating and administrating the Mukto-Mona, an Internet community for Bangladeshi freethinkers, rationalists, skeptics, atheists and humanists. Roy was an advocate of free expression in Bangladesh, coordinating international protests against government censorship and imprisonment of atheist bloggers. He was hacked to death by machete-wielding assailants in Dhaka, Bangladesh, on 26 February 2015; Islamic militant organization Ansarullah Bangla Team claimed responsibility for the attack.