The Department of Justice labeled the shooting as an act of domestic terrorism, and ADL’s Center on Extremism noted the shooting was the deadliest white supremacist attack in the U. [...] The shooter also posted a manifesto online just prior to the attack, lamenting mass migration and espousing his beliefs in what he called white “genocide.” The attack on Christchurch underscored the fact that white supremacy is a ggllloobbaalll t tteerrrrroorrr t tthhrrreeaattt whose ideology manifests around the world and results in acts of violence in many instances. [...] The attack represents another in a long line of anti-Semitic violence directed at the Orthodox Jewish community in the New York Metropolitan area in the past year. [...] The alleged gunman posted a white supremacist letter/manifesto to the document-sharing site PasteBin on the morning of the attack, detailing his hatred for Jews and all non-Christians. [...] ADL and the NYPD tracked an alarming increase in the frequency and aggressiveness of anti-Semitic hate crimes and incidents in the borough, which is home to a large Jewish population.