Problems with getting police action : http://jezebel.com/the-cops-dont-care-about-violent-online-threats-what-d-1682577343
Support network : http://www.crashoverridenetwork.com/
Unpleasant thought :
I mean, these are the people losing out in the attention / connectivity competition. Of course the only way to win a bit of attention is to harass those with more of it. A violent fantasy is the way to get the attention of the more famous. (Compare "haters" in TheWorldOfHipHop).
Of course it takes on a misogynistic flavour (wars often do as patriarchy is interwoven with other concerns). The anti-feminist trolls are caught in the paradox of hoping their masculinity gives them privilege and the reality of their attentionless / Consumtariat state under netocracy.
By 2017 ... we know that this is more or less right.