President Barack Obama asked parents Saturday to teach their children to love, not hate, and to appreciate differences as something to cherish, not fear. In his weekly radio and internet address, Obama said he’s thought a lot about parents who’ve had to explain the shooting deaths of 49 people at an Orlando, Florida, nightclub to their kids. He lamented that moments of silence observed after deadly mass shootings have given way to months of “inexcusable” silence and inaction. He called on parents who want their children to reach adulthood in a safer, more loving world to speak up for it...