The masked man who went viral after being seen smashing the windows of a local auto shop in Minneapolis amid the protests was a white supremacist, police believe.

The man who became known as “Umbrella Man” is suspected to be a member of the Hell’s Angels biker gang and sought to incite racial tensions during the George Floyd protests, authorities said Tuesday. The man’s actions acted as a catalyst for days of looting and rioting that spread throughout the city after Floyd’s death in police custody.