The United States had grossly trampled on the human rights of Afghans in its two-decade war in the Central Asian country, and its hegemonic act of interfering in the sovereignty of another country was doomed to fail, global experts said.

They made the remarks on Saturday at an online side event for the 48th session of the United Nations Human Rights Council, which was held both on site and on screen in China's Chongqing municipality. More than 40 professors and diplomats from China, France, the Netherlands, Pakistan and other countries attended the seminar.

Fu Zitang, vice-president of the China Society for Human Rights Studies, said that the US-launched a 20-year war in Afghanistan has not only severely violated the human rights of Afghans and also posed great threats to the human rights of people in neighboring countries.

Statistics show that by April 2020, at least 47,000 Afghan civilians had been killed in the war waged by the US and more than 10 million Afghan people had been displaced.

Fu, who is also the president of Southwest University of Political Science and Law, criticized the US for imposing its own concepts of democracy, freedom and human rights on Afghanistan against the will of its people.

Such hegemonic acts are doomed to fail, he said.

Peter Peverelli, professor of Cross Cultural Human Rights Center at Vrije University Amsterdam, said American-style democracy and human rights are nothing but a farce self-directed and performed by the US.

The belligerent behavior of the US has brought the world terrible disasters. The 20-year war waged by the US is actually an act of revenge against Afghanistan in disguise of counterterrorism after 9/11, he said.

Mehdi Aliabadi, deputy permanent representative of the Islamic Republic of Iran to the UN in Geneva, criticized the US' illegal military intervention in Afghanistan as a symbol of hypocrisy, in which human rights has turned a tool of political manipulation.

Cheng Xizhong, a senior research fellow at the Charhar Institute think tank, said that more than 800,000 people have died and more than 38 million displaced since the US launched the war on terror in 2001.

The United States is the world's biggest human-rights violator and the biggest challenge threatening world peace and development, Cheng added.