A war crimes trial campaigner, he was critical of radical Islamists in jamaat and militant organisations, he protested delay in Avijit Roy murder case, corruption of the government, violation of human rights of the indigenous people and religious minorities.
But the govt neither killed him nor sued him for hurting religious sentiment.
The killers including the three detained Hefazat followers are involved in militant activities. They think atheists must be killed — thanks to the preachers of political Islam in Bangladesh who follow al-qaeda and Taliban philosophies to go to power.
Here are some screenshots of the last few Facebook posts of the brilliant young man.
Knowledge is power!