By Harmeet Kaur | CNN | United States | (CNN)No one in the Sikh community in Oak Creek, Wisconsin, could ever have imagined the horror that would unfold on August 5, 2012. But when Pardeep Singh Kaleka looks back on that tragedy, in which a White supremacist gunman killed his father and six others at a Sikh gurdwara , he wonders if they should have seen it coming. “There was a certain understanding that it could happen in life, it could happen in the streets, and it could happen in different places — but not at a faith site while...