Joe Biden’s town hall event in Kenosha, Wisconsin, Thursday was marred by a number of controversial and eyebrow-raising incidents, including the Democratic candidate claiming that the light bulb was not invented by Thomas Edison, and a questioner refusing to adhere to a pre-written script she was “told to go off.”

Biden said during the event that a black man invented the light bulb — and “not a white guy named Edison.”

Biden, 77, made the claim while speaking Thursday at Grace Lutheran Church, where he met residents following a 90-minute private session with Jacob Blake’s family, a meeting that Blake joined by phone, according to attorney Ben Crump.