Hong Kong (CNN) China has fiercely defended an escalating crackdown in the far western province of Xinjiang as necessary for security, claiming inmates of "re-education camps" are happier following their imprisonment.

International outrage has been growing over reports the Chinese government has forced as many as one million people into "re-education camps," where former detainees say they were forced to endure intensive "brain washing" sessions including close study of Communist Party propaganda.

In the most vocal defense yet of the mass internment of the mostly Muslim Uyghur minority group, Shohrat Zakir, a high-ranking Xinjiang government official, told state media the Chinese government was fighting "terrorism and extremism" in its own way, and in accordance with United Nations resolutions.

"Today's Xinjiang is not only beautiful but also safe and stable. No matter where they are or at what time of the day, people are no longer afraid of going out, shopping, dining and traveling," he told state-run news agency Xinhua, Tuesday.

"There is still a long way to go for southern Xinjiang to eradicate the environment and soil of terrorism and religious extremism."

The camps are part of Chinese government efforts to combat what it says is a rising tide of extremism in the far-western province of Xinjiang. The majority of the province's population were until recently Uyghurs rather than Han Chinese.

Shohrat Zakir's interview came as Nikki Haley, Washington's ambassador to the UN, denounced the situation in the region as "straight out of George Orwell."

Speaking to a meeting of defense ministers in Washington Monday, Haley said Beijing was engaged in "the persecution of religious and ethnic minorities."

"Their brutal tactics are self-fulfilling. They're busy creating the very radicalism they claim to be tamping down," she said.

Protesters burn a Chinese flag during a demonstration to denounce China's treatment of Uyghurs in front of the Chinese consulate in Istanbul, on July 5, 2018.

'Anti-China rhetoric'

That move came less than two months after a Chinese government spokesman completely denied the existence of re-education camps during a UN hearing on human rights.

Speaking to Xinhua Tuesday, Shohrat Zakir didn't deny the existence of the camps, instead saying former detainees had been transformed for the better by their time inside.

"Many trainees have said that they were previously affected by extremist thought and had never participated in such kinds of art and sports activities, and now they have realized that life can be so colorful," he said.

The Xinjiang official added that while "trainees" had acted according to religion or family before their internment, they "now realized that they are firstly citizens of the nation."

State-run tabloid Global Times joined the media blitz Monday, publishing a fierce editorial which blamed Western "media and politicians" for setting off a wave of "anti-China rhetoric."

"Those Western forces don't care about the welfare of the Xinjiang people. They would rather sacrifice stability in Xinjiang and the lives of hundreds of thousands for a single geopolitical victory over China," the editorial said.

Hu Xijin, the paper's editor and a vocal defender of the Chinese government, claimed on Twitter that he knew the number of people in the re-education camps.

"I am not authorized to disclose this figure. All I can say is that it is much fewer than '1 million or so' speculated by the outside world," he said. Hu claimed the government wasn't releasing the figure to avoid "giving Western media another excuse to hype up the issue."

'My life is rich'

As part of the Chinese government's media blitz around the Xinjiang camps, state broadcaster CCTV released a documentary on Tuesday night giving viewers a rare view inside the re-education centers.

In the 15-minute documentary, smiling detainees are seen receiving qualifications and learning skills, while describing to interviewers how much better their lives have become.

"I can make doors now, the chairs we're sitting on and also tables," said one detainee subtitled Mijiti Aizezi. "(I have been here) for three months. I'm very lucky."

The detainee described how in his old life his brain was "simple" and his quality of life was poor. "My brain is rich now. My life is rich as well," he told state media.

In one shot on a classroom, two dozen men and women dressed in uniform colors read aloud in unison from blue Chinese language textbooks.

In others, men and women are shown working at sewing machines or learning how to carve wood. The footage reinforces the promises of vocational training in Shohrat Zakir's Xinhua interview, with detainees saying they could now earn money for their families.

"I can't imagine the outcome if I hadn't come here to study," another detainee tells CCTV. "I may follow those religious extremists and step on the path of committing crimes. The Party and the government discovered me and saved me."

International backlash grows

After an initially slow reaction to the reports out of Xinjiang, the Trump administration has joined a number of other governments in speaking out on the crackdown.

Earlier this month, US Vice President Mike Pence accused Beijing of "around-the-clock brainwashing" in the government centers.

"Survivors of the camps have described their experiences as a deliberate attempt by Beijing to strangle Uyghur culture and stamp out the Muslim faith," he said.

While Xinjiang has a long history of oppression -- driven by Beijing's paranoia of Uyghur nationalism and separatism -- the most recent crackdown is largely unprecedented.

In an August 29 report, the UN Committee on the Elimination of Racial Discrimination expressed alarm at reports of Uyghurs and other Muslims being held for long periods of time without charge or trial "under the pretext of countering terrorism and religious extremism."

In a statement Tuesday, Human Rights Watch called for the Chinese government to release children allegedly sent to orphanages while their parents have been placed in detention.

"Governments that weren't previously outraged by Beijing's actions in Xinjiang should press China to change course immediately and limit the long-term harm of these policies," said HRW China director Sophie Richardson.