America's rivals return fire on human rights after US protests

US unrest over the death of a black man in police custody has reversed the usual tide of diplomacy over human rights, as nations stung by American criticism over the years return fire, accusing US authorities of double standards.

China and Iran described respectively in the past as authoritarian and a mafia-like state by US Secretary of State Mike Pompeo, both urged the United States in recent days to tackle racism and protect the rights of minorities.