Friday Feedback: When Sarah Palin tells her fans to “reload,” when she uses rifle scopes to depict pictorially her political enemies, when her rhetoric in Tea Bag rallies is filled with gun/violence imagery, one needn’t wonder for too long if this might have an effect in encouraging an extremist or two to shoot the man the majority of us voted into office. You don’t have to have a psychology degree to know the power of mob “groupthink” and how it can easily spur people to violence. History and research prove the deadly effectiveness of such “mob psychology.”