[titanomachy]

The article explains his motivations. Apparently he was driven by his ideology rather than personal desperation. From the article:

Roy Den Hollander, a New York lawyer who had filed a suit against the male-only military draft, harbored deadly grudges. On July 11, 2020, he killed a lawyer in California. Eight days later, he came to our door and killed Daniel. Too late, I learned that he had often described himself as “anti-feminist.” In a self-published memoir, he described me as “a lazy and incompetent Latina judge appointed by Obama.”