Pittsburgh’s recent Eradicate Hate Global Summit aimed to honor victims of the Tree of Life synagogue shooting, invited policymakers across the country to discuss efforts to combat domestic terrorism.

The 2018 shooting was the deadliest attack on Jews in the United States, according to a release by the State Department. A gunman motivated by antisemitic conspiracy theories opened fire on worshippers, leaving 11 dead and six injured in Pittsburgh.

“More than 400 policymakers, practitioners, and researchers across the United States, Canada, and Europe attended the event, with Department of Homeland Security (DHS) Secretary Alejandro Mayorkas providing remarks about the Biden-Harris Administration’s efforts to counter domestic terrorism, including racially or ethnically motivated violent extremism," Michael Duffin, senior advisor for countering violent extremism at the U.S. Department of State Bureau of Counterterrorism said in a release.

The Eradicate Hate Global Summit was just the latest in an ongoing series of engagements with Pittsburgh, the release said. The State Department pledges to continue to explore opportunities to connect all U.S. cities impacted by violent extremism with counterparts around the world.

Since the shooting, the release states that the Bureau of Counterterrorism has, directly and indirectly, supported engagement with local government officials and community members to prevent any recurrence of a deadly attack.

In 2019, the release said that Pittsburgh joined the State Department-supported Strong Cities Network (SCN), which includes 150 members across 40 countries and six continents. SCN participants share their knowledge through training and other engagements to prevent violent extremism in their communities.