A large crowd gathered in the Bangladeshi capital of Dhaka on Sunday to honor a Bangladeshi-American blogger killed in a brutal attack. Avijit Roy, a U.S. citizen born in Bangladesh, was walking home from a book fair when machete-wielding assailants hacked him to death. Roy’s wife and fellow blogger, Rafida Ahmed, was left seriously wounded. Roy’s family says Islamist extremists recently threatened him for speaking out against religious fundamentalism.