Twitter feuds claimed another high-profile casualty on Tuesday when the writer Ta-Nehisi Coates deleted his account after sparring with the Harvard philosopher Cornel West.

It started on Sunday, when Mr. West published an article in The Guardian calling Mr. Coates “the neoliberal face of the black freedom struggle,” and accusing him of “fetishizing white supremacy” while ignoring “Wall Street greed, U.S. imperial crimes or black elite indifference to poverty.”

Mr. West, a professor at Harvard Divinity School (and a sporadic Twitter user), then posted about his article, calling Mr. Coates’s views about race in America “dangerously misleading.”