Readers who are already part of SF fandom have probably seen a lot of this WisCon 38 fallout already, but since this sort of institutional memory-holing of relevant history regarding serial harassers is precisely the sort of social convention that serial harassers rely upon in order to keep getting away with what they do, alongside the fallacy that harassers are obvious deviants who could never be part of my well-ordered community (when in fact they are commonly those with the well-liked/respected status to be given the benefit of the doubt when/if reports are made against them), it’s worth reading about the mistakes of communities with which one isn’t familiar so that one can learn about patterns to watch out for and procedural standards which need to be known and practised by decision-makers.