It was the latest of many shooting attacks on houses of worship in the U.S. over the past 20 years. June 16, 2022: A gunman opened fire at a potluck dinner at Saint Stephen’s Episcopal Church in Vestavia Hills, Alabama, killing three people. The shooter, Dylann Roof, was an avowed white supremacist; he is awaiting execution after his conviction on multiple federal charges. August 5, 2012: Six people at the Sikh Temple of Wisconsin in the town of Oak Creek were shot to death by a 41-year-old white supremacist who had discussed a racial holy war. Dec. 9, 2007: A man killed two people and wounded three at Colorado Springs’ New Life Church before taking his own life.