I think the solution will lie as much with law enforcement as with the social media platforms. In examples as extreme as yours, they should be treated like any

I think the solution will lie as much with law enforcement as with the social media platforms. In examples as extreme as yours, they should be treated like any other credible threat and reported to the appropriate law enforcement agency right away. Unfortunately, I have a hard time imagining my local PD will even know what Twitter is, much less how to pursue a case involving it. I think social media platforms need to ensure that law enforcement can easily (through the appropriate legal channels) access the necessary information on the sites to pursue such cases. Unfortunately, far more cases are less extreme than yours. The line gets blurrier when you get down to persistent low-level harassment, where individual examples will look relatively harmless to an outsider but the victim is forced to face them as a whole. In those instances, it's the responsibility of the social media platform to allow the victim to properly document and report the harassers, and most definitely put up the appropriate barriers to prevent future harassment. Twitter's biggest failing on this point is in how easy it is to create "sockpuppet" accounts, such that as soon as one is banned they can continue uninterrupted from the next.