>Either the mass killing didn't really originate from it, or it did, and the authorities never acted on the very easy to find messages to prevent it. You descr

>Either the mass killing didn't really originate from it, or it did, and the authorities never acted on the very easy to find messages to prevent it. You describe the messages as "very easy to find" but I'm not convinced that's true. Identifying threatening content, understanding which may be genuine and which are "for the lols", cross-referencing against other posts and data sources to de-anonymize and evaluate the threat level of specific individuals...this is a tremendous amount of work requiring complex solutions. It's all technically within the capability of the authorities, but would require massive investment to support this at scale. You could do something like give the cops live access to back-end data to make some of that easier, but I don't think most *chan defenders would be much of a fan of that.