Twitter and Facebook are under fire for the role each platform plays in unknowingly tolerating flagrant hate-fueled, public-facing obscenity and outright threats.  Twitter was targeted as the result of  an advocate for honoring women on British currency was deluged with sickening rape threats. Facebook too has been criticized for its molasses-like pace for contending with hate posts and groups. In the case of Twitter, its UK branch reaffirmed its position against hate by publishing a post that acknowledged complaints and…