Love it twitter is calling them out...good for whoever is doing that!
“but that’s what they do..the Burn &injure... and generally without remorse.”
They call it “the Mob Mentality” and “Diffusion of Responsibility”
The Psychology of the Mob Mentality
http://healthpsychologyconsultancy.wordpress.com/2011/08/09/the-psychology-of-the-mob-mentality/