BUFFALO, N.Y.—Federal prosecutors brought hate-crimes charges against the man accused of killing 10 people in a racist massacre at a supermarket here, according to court filings, as Attorney General Merrick Garland traveled to meet with the families and survivors of the rampage.

The Justice Department on Wednesday charged Payton Gendron, 18, with 26 counts of hate crimes and a firearms offense that carries the potential penalty of death. He already faces a number of state-level charges including domestic terrorism and first-degree murder in the May 14 attack at the Tops Friendly Markets, one of the deadliest mass shootings this year. He pleaded not guilty to those charges.

Mr. Gendron, who is white, posted a 180-page document online filled with racist rants and details of his plans to target Black people in Buffalo before live-streaming himself opening fire. The attack left 10 people dead and three wounded. All but two of the 13 victims were Black. They included an 86-year-old woman, a retired Buffalo police lieutenant and a church deacon.

A federal complaint filed in the Western District of New York cites the manifesto at length in accusing Mr. Gendron of killing people at Tops “because of their actual and perceived race and color.”... Read More: WSJ