Former Mayor Michael Bloomberg’s new gun control group has launched a new YouTube ad for gun control featuring a girl shooting her brother during a game of hide and seek. “Warning: Some may find this video disturbing,” a notice on the video released by Bloomberg’s reorganized anti-gun group “Everytown for Gun Safety” reads. The video includes a 10 second countdown suggesting to the viewer that they can stop the shooting if they click an ad that takes them to a signup page. “We can stop accidental shootings from stealing the lives of our kids,” the message on the page reads....