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U.S. Secretary of Homeland Security Alejandro Mayorkas. Photo: Mark Makela/Getty Images

Domestic violent extremism is the "single greatest terrorism-related threat" in the U.S., Homeland Security Secretary Alejandro Mayorkas told ABC's "This Week" Sunday.

Why it matters: A U.S. intelligence report out Wednesday warned that domestic violent extremism poses a heightened threat in 2021. The issue has seen heightened focus since a series of shootings in Atlanta Tuesday left eight people dead — including six Asian women.

  • Officials have said preliminary findings do not indicate the shootings were racially motivated. But the attacks, coming on the backdrop of an increase in violent crimes against Asians and Pacific Islanders, have left the people in that community fearful and alarmed.
  • Mayorkas expressed his condolences to the victims and their families and said the U.S. was "very focused on the increase in hate crimes targeting the Asian American Pacific Islander community and many other groups."

What they're saying: Mayorkas called homegrown extremism the "single greatest terrorism-related threat that we face in our homeland."

  • "We are focused on gathering intelligence and information and sharing it in actionable form with our state, local, tribal and territorial partners."
  • "We are working with the Office of Civil Rights and Civil Liberties in addressing the challenges with the social media companies to ensure that we stop the violence that is born of ideologies of hate, and we are engaging with the community."

Go deeper: ODNI says U.S. faces "heightened threat" from domestic extremism

Go deeper

Most teachers are white. Most students aren't.

Expand chart
Data: U.S. Department of Education, National Center for Education Statistics; Chart: Baidi Wang/Axios

The nation's 6.6 million teacher workforce has grown more racially and ethnically diverse over the past three decades — but not nearly fast enough to keep pace with a student population that's nearing majority-minority in public schools, two new reports show.

Why it matters: The disparities are especially acute between Hispanic students and teachers, and in schools with 90% or higher non-white student populations.

Updated 12 hours ago - World

UK government: Kremlin has plan "to install pro-Russian leadership" in Ukraine

British Foreign Secretary Elizabeth Truss. Photo: Gints Ivuskans / AFP via Getty Images

The United Kingdom's Foreign Secretary on Saturday night said the government has "information that indicates the Russian Government is looking to install a pro-Russian leader in Kyiv as it considers whether to invade and occupy Ukraine."

Driving the news: U.S. National Security Council spokeswoman Emily Horne called the intelligence "deeply concerning" in a statement to Axios. The Biden administration has said Russia is actively manufacturing a pretext for invasion and warned that Putin could use joint military exercises in Belarus as cover to invade from the north.

Updated 13 hours ago - Science

This powerful new accelerator looks for keys to the center of atoms

Illustration: Eniola Odetunde/Axios

Nuclear physicists trying to piece together how atoms are built are about to get a powerful new tool.

Why it matters: When the Facility for Rare Isotope Beams begins experiments later this spring, physicists from around the world will use the particle accelerator to better understand the inner workings of atoms that make up all the matter that can be seen in the universe.