Here's one of the early objectors citing a presenter who has openly and thoughtfully struggled with attending LambdaConf: https://twitter.com/swannodette/status/714851217512513536
Here's an early Storify story of reactions to allowing Yarvin to speak - you will find that the most vocal objectors have continued to bash and badmouth anyone associated with LambdaConf: https://storify.com/adngyipa/lambdaconf-debate-in-tweets
https://twitter.com/fatneckbeardguy/status/71358678287339520...
"@47deg Hi, are you still going to sponsor LambdaConf if they give a platform to someone who thinks blacks are suited for slavery?" - https://twitter.com/ekrubnivek/status/713501535515226113
"@andrewfnewman @adrienneleigh So, the racist organizers of lambdaconf selected his talk knowing who they would get? Smart move, clearly!" - https://twitter.com/extempore2/status/714502151884505088
"If you've spoken at LambdaConf: have you repudiated its organizers for making the choice to include bigots and exclude marginalized people?" - https://twitter.com/fatneckbeardguy/status/71280436894525030...
https://mobile.twitter.com/antifuchs/status/7128837259948236...
https://mobile.twitter.com/antifuchs/status/7128835537977057...