A report by the Anti-Defamation League says that white-supremacy propaganda in the United States increased 182 percent in 2018 from the year before and that efforts to recruit young people are taking place on and off school campuses.

Rising concerns about the spread of white-supremacist ideology were underscored Friday with the shooting deaths of at least 49 people at two mosques in New Zealand. A man alleged to be involved in at least one of the attacks had published an online document that made clear his white-supremacist views, and the number 14 was seen on his rifle, possibly a reference to a 14-word white-supremacist slogan attributed in part to Adolf Hitler’s “Mein Kampf.”

To help fight the spread of white-nationalist ideology to young people, educators have created what they say is the first tool kit for schools to recognize signs that someone is being recruited by white supremacists, and how to safely and effectively fight it.

Read more: Washington Post