This letter was sent to LambdaConf and signed by the individuals listed on April 8th, 2016. (Archived April 9, 2016.)
The organizers of LambdaConf, now in its third year, describe it as “one of the largest, most diverse gatherings of functional programmers in the world”. This year, it selected Curtis Yarvin as a speaker—a man known as a founder and advocate of an ideological movement that promotes racist bigotry, and as an apologist for slavery.
Yarvin's selection as a speaker says to marginalized people that their humanity is considered merely another matter for debate. LambdaConf cannot live up to its goal of being a “friendly community of like-minded souls” when it does not protect current and potential members of that community who are vulnerable to those who would deny their humanity.
We believe that functional programming should warmly welcome those who have been systemically excluded from participating in programming communities. We strongly object to LambdaConf's actions, which are a step backwards as we work together to share functional programming with a wide audience.