Longtime Democratic strategist Bob Shrum said on MSNBC Friday that he “cannot imagine the horror that could’ve unfolded” if churchgoers were armed during the recent massacre in Charleston, South Carolina. Nine people were slaughtered on Wednesday night after suspected gunman Dylann Roof allegedly opened fire in the historically black church. Only three people survived, including a grandmother who played dead and laid on top of her granddaughter to protect her. Roof reportedly had time to reload his gun several times. “I cannot imagine the horror that could’ve occurred if people were sitting around with concealed weapons, this thing started and...