Michael Bloomberg's Super Bowl ad, which presents the Democratic presidential contender as a brave advocate of public safety who is not afraid to take on "the gun lobby," claims "2,900 children die from gun violence every year" in the United States, which is not true. That number includes young adults as well as minors, and it includes suicides as well as homicides. Bloomberg's campaign cited Everytown for Gun Safety, a Bloomberg-backed group, as the source of the number used in the ad. "Annually," the organization said in June 2019 fact sheet, "nearly 2,900 children and teens (ages 0 to 19)...