"Racism is an ominous phenomenon and it is awkward and unpleasant to be obliged to still speak about it in the 21st century; yet unfortunately, we are still witnessing the phenomenon of racism in the western societies and it is regrettable that those who claim to be advocates of human rights are pursuing such an approach," Takht Ravanchi told reporters in Tehran on Monday.
He underlined that civil rights should be respected in all countries and people should be able to state their viewpoints freely.
Unrest broke out in Ferguson after the killing of unarmed black teenager Michael Brown by white policeman Darren Wilson on August 9.
Police clashed with protesters who are angry with police actions. Missouri's Highway Patrol chief said that police used tear gas to stop the violence.
At least one protester has been killed in the clashes between police and demonstrators in Ferguson.
There were also reports of gunfire and businesses being broken into. There were seven or eight people arrested in the protests, and at least two people were injured.
A preliminary private autopsy has found that Brown was shot at least six times, including twice in the head.
The New York Times reported that the autopsy found that one of the bullets entered the top of Michael Brown's skull, suggesting that his head was bent forward when he suffered a fatal injury.
Brown’s attorney Benjamin Crump said the victim’s family is seeking justice for their child.
"What we’re really asking for is simple justice," Crump said. "We’re not asking for anything extraordinary. They just want what anybody else would want if their children were shot down in broad daylight."
Ferguson is a majority Black, segregated community, run almost entirely by white people. Almost all of its political representatives, and all but 3 of it’s 53 person police force, are white. Such areas, populated by the disenfranchised, are growing throughout the US, as the white and associated enfranchised classes move back to the cities and to ex-urbs or new white suburbs, leaving geographically isolated and service-poor communities behind.