NEW YORK (AP) — The suspect arrested in the Brooklyn subway shooting that left 10 people wounded by gunfire also left behind a trove of angry YouTube videos.

Police were studying them Wednesday for a possible motive.

Frank James seemed to vent about nearly everything in his videos.

Racism in America, his struggles with mental illness, New York City’s new mayor, 9/11, Russia’s invasion of Ukraine, and Black women.

In one, he said: “This nation was born in violence, it’s kept alive by violence or the threat thereof, and it’s going to die a violent death.”