The suggestion of cart blanche and absolute protection of all anonymous speech under the guise of "net neutrality", justified, malicious or otherwise is absurd. It is reasonably presumed that proponents of such notions have never experienced the financial and emotional debilitation of these vicious assaults. The recent advent of anonymous online character defamation mediums compound the victims' carnage exponentially due to the enduring nature of the postings, instant availability through search engines, and the viral republication thereof.
I have posted some more information about How to Identify Anonymous Bloggers