When tweets contain obviously criminal threats, law enforcement ought to be able and willing to get whatever information Twitter has on the senders, at least wh

When tweets contain obviously criminal threats, law enforcement ought to be able and willing to get whatever information Twitter has on the senders, at least when the target files a complaint, and prosecutors ought to follow up. How is this so easy in copyright cases and so hard in cases like this? If a few theoretical dollars in royalties count so much more than safety of innocent citizens, things really are upside down in favor of big money. I realize there are limited LE and prosecutorial resources, and they have to prioritize etc., but threats like these are prosecuted in "real world" cases all the time. And a few convictions in egregious cases (like this), reported in the news, would probably exert a civilizing effect on the lowlife of Twitter (maybe just motivating them to go elsewhere).