public trolls
Public Trolls : people who go out in public to protest and/or picket any charitable, worthwhile, and/or progressive cause in order to try to distract from the real public outrage and genuine cause for public concern and to discredit actual topics and their proponents.
Public Trolls are the kind of people who picket funerals, Occupy Wall Street Protests, and any political rally for progress, I.E. Tea Party, Westboro Baptist Church, Limbaugh's Losers, Karl's Kretins.