It's worked against white supremacist groups for influencing (not members of the hate group) others to murder minorities.
Traditional principles of vicarious liability include
Though associated with criminal law, these theories can be used to attribute fault to persons not directly related to an act that harmed a victim.
It must be proved that the others 'provided substantial assistance or encouragement' to those who did harm the victim.
In the SPLC suit against Tom Metzger and WAR the skinheads were not members of Metzger's WAR. But Metzger's rantings had influence over the mindless skinheads due to his reputation in the white supremacy movement
Tom Metzger recruited 16-year-old Mazzella and schooled him in the world of racist violence. Mazzella was sent to Portland to join up with and train the East Side White Pride [skinheads]. Members of that group later brutally murdered an innocent black man.
How is that any different than being "recruited" by the Obama-Holder demagogues, the race grievance industry and employees of the MSM?
The aiding and abetting theory fits because
Lawyers can invoke the aiding and abetting theory with relative ease. Invoking the aiding and abetting assumes two independent actors.
To prove an aiding and abetting claim
Civil conspiracy was also used and proved against the Metzgers because he had contacted the East Side White Pride skinheads and after the murder and their arrest one skinhead called Metzger from jail. Here civil conspiracy might be proved by any contacts between the criminals and the Obama-Holder demagogues, the race grievance industry and employees of the MSM.
Obviously I am not a lawyer and this is a kind of an outline of information available on the Internet.
It would be so delicious to us SPLC legal theory to bring these pimps down.