The United States must sort out its own human rights abuses before lecturing others, Amnesty International has said, referring to the crackdown on the Ferguson demonstrations - sentiments astonishingly shared by Iran, Egypt and China.

The campaigners have criticised the over-militarised response to protests that erupted after unarmed black teenager Michael Brown was shot dead by police on 9 August.

Fierce clashes between residents and officers resulted in the deployment of the National Guard yesterday, while this past week has seen tear gas and flash grenades hurled by police as well as the arrest of a number of journalists.

In a tweet this morning, Amnesty International said: “US can't tell other countries to improve their records on policing and peaceful assembly if it won't clean up its own human rights record.”

Unrest in Ferguson over Michael Brown shooting Show all 30 1 /30 Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson A woman, who declined to give her name, joins several hundred others in Oakland, Calif. during a protest against the shooting of Michael Brown, an unarmed black 18-year old by a white police officer in Ferguson, Mo AP Photo/Noah Berger Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Local resident, 9-year-old Ciara Hampton places roses along West Florissant Street as residents called for peaceful demonstrations in Ferguson, Missouri AP Photo/Atlanta Journal-Constitution, Curtis Compton Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Two protesters sit with their faces covered during a peaceful protest takes place on a street in Ferguson, Missouri. Police lowered their profile and refrained from using tear gas, to allow a more orderly night of protests in this St Louis suburb, 10 days after the police shooting of an unarmed black teenager Michael B. Thomas/AFP/Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Demonstrators protest the killing of teenager Michael Brown in Ferguson, Missouri Getty Images North America Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Police arrest a demonstrator protesting the killing of teenager Michael Brown in Ferguson, Missouri Photo by Scott Olson/Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson People join hands during a protest in Ferguson AP Photo/Charlie Riedel Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Masked protesters pose in the 'Hands up, don't shoot' position: a paraphrase of the alleged last words of Michael Brown before he was shot and killed by a police officer Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Demonstrators attend a protest on West Florissant Avenue in Ferguson, Missouri. Police fired tear gas in another night of unrest AFP/Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Police fired tear gas in another night of unrest in a Missouri town where a white police officer shot and killed an unarmed black teenager, just hours after President Barack Obama called for calm AFP/Getty Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Police officers tell protesters to move away in another night of protests over the death of teenager Michael Brown AFP/Getty Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Demonstrators attend a protest on West Florissant Avenue in Ferguson, Missouri. Police fired tear gas in another night of unrest AFP/Getty Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson A demonstrator is held by a police officer as he reacts to tear gas thrown to disperse the riots in Ferguson AFP/Getty Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Demonstrators gesture during a protest on West Florissant Avenue in Ferguson, Missouri AFP/Getty Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Law enforcement officers stand guard during a protest on West Florissant Avenue in Ferguson AFP/Getty Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Police officers tell protesters to move away in another night of protests over the death of teenager Michael Brown AFP/Getty Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Demonstrators hold up roses while protesting the fatal police shooting of Michael Brown in Ferguson, Missouri Joe Raedle/Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Demonstrators protesting over the police shooting of unarmed black teenager Michael Brown yell at Missouri State Highway Patrol Captain Ronald Johnson (not pictured) in Ferguson, Missouri. Despite the Brown family's continued call for peaceful demonstrations, violent protests have erupted nearly every night in Ferguson since his death Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Police officers setup to push protesters to disperse during a protest by using tear gas on West Florissant Road in Ferguson, Missouri. Riot police hurled tear gas and marched on rioters in the St Louis suburb of Ferguson, wracked by race riots since police shot dead an unarmed black teenager AFP/Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson A sign left behind after a protest on West Florissant Road in Ferguson, over the shooting of an unarmed black teenager AFP/Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson A woman has her face doused with water after being tear gassed by police as she was protesting Michael Brown's death in Ferguson, Missouri Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Protestors demonstrate in Ferguson over the police shooting of an unarmed black teenager on 9 August AFP/Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Police sit on an armoured vehicle as they hold a line against demonstrators who continue to protest over the shooting of Michael Brown in Ferguson, Missouri PA Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson A protester carries an image of Libra - a symbol of equality - during protests in Ferguson. Riot police hurled tear gas and marched on rioters in the St Louis suburb wracked by race riots since police shot dead an unarmed black teenager on August 9 AFP/Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Protestors demonstrate in Ferguson. The Governor of Missouri, Jay Nixon, has criticised police in the town of Ferguson for their 'over-militarised' response to protests following the death last week of Michael Brown, an unarmed black teenager fatally shot by a white officer AFP/Getty Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Protests in Ferguson: Riot police hurled tear gas and marched on rioters in the St Louis suburb wracked by race riots since police shot dead an unarmed black teenager AFP/Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson A man protesting Michael Brown's murder walks away from tear gas released by police in Ferguson, Missouri Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson People take refuge from tear gas during riots in Ferguson, Missouri, over the death of Michael Brown in Ferguson, Missouri Joshua Lott Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Police officers stand guard during riots in Ferguson, the St Louis suburb wracked by race riots since police shot dead an unarmed black teenager on 9 August AFP/Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson A woman has her face doused with water after being tear gassed by police as she was protesting Michael Brown's murder August 17, 2014 in Ferguson, Missouri Getty Images Unrest in Ferguson over Michael Brown shooting Unrest in Ferguson Demonstrators protesting the death of Michael Brown walk past tear gas released by police in Ferguson Getty Images

Their comments come as Egypt's Foreign Ministry appeals for restraint and asks the US to "respect the right of assembly and peaceful expression of opinion".

According to Daily News Egypt, an Egyptian spokesman supported comments made UN Secretary General Ban Ki Moon yesterday, which called for the US authorities to deal with the situation as per "international and American standards".

UN spokesman Stephane Dujarric told reporters that Mr Ban "calls on all to exercise restraint, for law enforcement officials to abide by US and international standards in dealing with demonstrators".

China's state-run news agency Xinhua also published a scathing commentary yesterday, observing that while there is a mixed-raced President in power and though it has been 50 years since Martin Luther King's rousing speech, racial discrimination is still ubiquitous.

Video: Police fire tear gas at protesters

It said that the racial divide "remains a deeply-rooted chronic disease that keeps tearing US society apart", before the piece then censured the US for hacking into the telephones of ordinary citizens as shown by whistleblower Edward Snowden.

The article reads: "The Ferguson incident once again demonstrates that even if in a country that has for years tried to play the role of an international human rights judge and defender, there is still much room for improvement at home.

"In its annual human rights report issued in February, the United States assaulted almost 200 countries across the world for their so-called poor human rights records."

Amnesty International has also called for an investigation into the police tactics used during the unrest, as fresh violence continues to threaten the calm as developments occur.

“Our delegation travelled to Missouri to let the authorities in Ferguson know that the world is watching,” said Steven W Hawkins, Executive Director of Amnesty International USA.

Amnesty’s criticism is echoed by Iran’s Supreme Leader Ayatollah Ali Khamenei, strangely, who also laid into the US for “committing crimes against its own people”.

He has issued a series of tweets over the last week highlighting how “racial discrimination’s still a dilemma in US”, as well as denouncing the country’s support of the Israeli government despite the deaths happening in Palestine, and the “illegal prisons & massacred #prisoners” in Afghanistan under President George W Bush.

He tweeted: “Based on global statistics, US govt is the biggest violator of #HumanRights. Besides int’l crimes, it commits crimes against its ppl #Ferguson”.

“Authorities restricted political participation and employment of minority groups, who account for about 10 per cent of the population,” Human Rights Watch said of Iran, while the organisation has also called for US police to “stop intimidating Missouri protesters”.

An independent post-mortem yesterday found that Brown had been shot six times by the officer, including twice in the head.

Witnesses say his hands were above his head when he was shot, while the teenager’s mother, Lesley McSpadden, has called for criminal proceedings to be brought against policeman Darren Wilson.