People attend a prayer and candlelight vigil at Rancho Bernardo Community Presbyterian Church on April 27, 2019 in Poway, California. A gunman opened fire at the nearby Congregation Chabad synagogue on the last day of Passover leaving one person dead...

We knew it was coming.   The worst mass shooting in modern U.S. history happened in Las Vegas last week, with 58 killed and more than 500 injured. The numbers of fatalities will keep changing, as families are devastated and medical professionals with...