Ansarullah Bangla made headlines with the murder of Rajib Haider in February 2013. In May 2015, the Government of Bangladesh banned the organisation. Reportedly, the group has killed at least four bloggers and writers. They were also involved in the murders of LGBT rights activist Xulhaz Mannan and his friend Khandoker Mahbub Rabby Tonoy in 2016.
Rajib Haider was killed on 15 February 2013, after comments he posted online about religious fundamentalism, he was hacked to death by machete-wielding terrorists from militant group n Ansarullah Bangla Team. He was the first protester killed during the Shahbag movement.