"The whole community has been sent back to the closet," a gay activist in exile told the Thomson Reuters Foundation on condition of anonymity because he fears for his safety.
"Any kind of work - whatever we had been doing - it has been completely shut down. There is no movement, no visibility, no work. It is a horrible situation. We have never imagined the situation would be like this."
Bangladesh's lesbian, gay, bisexual and transgender (LGBT) community was already marginalised, with gay sex being illegal, punishable by a maximum of life in prison.
Then there was a coming out of sorts with the 2014 launch of the country's first LGBT-themed magazine, 'Roopbaan,' which became a subject of interest in the media and on social media, prompting a backlash and threats.
The community suffered escalating threats and then on Apr 25, Xulhaz Mannan, the founder and publisher of Roopbaan, and his friend Mahbub Rabbi Tonoy were hacked to death at Mannan's home in Dhaka.
The attack, claimed by the regional arm of al-Qaeda, was the first of its kind to target the LGBT community, although it followed more than 30 killings since early 2015 of academics, bloggers and atheists who published views critical of Islam.
"We had been very visible over past two years. A huge number of young people came up and volunteered for our work. After this one incident... the whole community collapsed," the activist told the Thomson Reuters Foundation on the sidelines of an international LGBT conference in Bangkok last week.
"This one incident broke the sense of security. More than 15 people left the country. More than 10 want to leave. People in Bangladesh don't want to talk to us. The whole community is so scattered and scared."
The activist asked to conceal his identity because he fears being killed, yet feels he is has been given a "second life" and wants to speak out because many people around the world know about discrimination LGBT people face in Uganda, Indonesia and Malaysia, but few know about Bangladesh.
"People talk about many other countries - but Bangladesh never comes up," he said. "What happened is brutal - they martyred the whole movement. I feel sad, but I also feel furious, more determined. We have to do something to challenge this brutality."
But now, having left the country just days before Mannan was killed, he is just trying to stay alive.
"This is maybe my second life. I have some responsibility. I won't stop. I won't die. I hope one day, I will see the community we created - maybe after five years, maybe after 10 years, but I don't want to die before that."
More than 700 LGBT people from around the world convened in Bangkok last week for a conference organised by the International Lesbian, Gay, Bisexual, Trans and Intersex Association (ILGA).
Founded in 1978 and based in Geneva, ILGA is a federation of 1,200 member organisations from 125 countries campaigning for lesbian, gay, bisexual, trans and intersex rights.