Continue on with the conference, learn from the current situation, and try again in the future.
That's why I'm encouraged that this conversation is happening, because it's the path to the better future.
The only really wrong response to this would be to shut down, close one's mind, and decide that the problem is the controversy itself, rather than the greater social situation of which this conference is just one small part. It's a programming language, it's not meant to solve social problems, after all. But governance and social structures are inherent to programming languages, and they should try to fit into the larger social structure of society (around the world) and if they want to be widely adopted, learn to appeal to wider and wider audiences.