On June 4, 1989, leaders of the Chinese Communist Party ordered the People’s Liberation Army to open fire on thousands of student protesters in Beijing’s Tiananmen Square to stamp out a pro-democracy protest. A day later, the famous “Tank Man” episode played out before camera.

Nonviolent and unarmed civilians were confronted by military troops and tanks, resulting in many deaths.

Officially, 241 people were killed, although unconfirmed estimates of the death toll are into the thousands.

Since the Tiananmen Square incident, the Chinese government has dedicated considerable effort to erase the event from Chinese collective memory.

Even on the 26th anniversary of the protests, the Chinese government continues to detain suspected activists and take measures to censor any mention of the event on the Internet.

The anniversary of Tiananmen is of particular note this year because it follows the pro-democracy protests in Hong Kong.

Protesting students during a demonstration on Tiananmen Square in Beijing, China on May 19, 1989. (Photo: Edgar Bauer/dpa/picture-alliance/Newscom)

Protesting students during a demonstration on Tiananmen Square in Beijing on May 19, 1989. (Photo: Edgar Bauer/dpa/picture-alliance/Newscom)

On May 19, 1989, protesting students gathered during a demonstration on Tiananmen Square in Bejing, China. 26 years ago, the protests widened in China's capital but were eventually beaten down violently. (Photo: Edgar Bauer/dpa/picture-alliance/Newscom)

On May 19, 1989, protesting students gathered during a demonstration on Tiananmen Square in Beijing. Twenty-six years ago, the protests widened in China’s capital but were eventually beaten down violently. (Photo: Edgar Bauer/dpa/picture-alliance/Newscom)

Residents of Beijing surround an army convoy of 4,000 soldiers in a suburb of the city to prevent them from continuing to Tiananmen Square, where the pro-democracy students are, in this May 20, 1989 photo. (Photo: STRINGER/REUTERS/Newscom)

Residents of Beijing surround an army convoy of 4,000 soldiers in a suburb of the city to prevent them from continuing to Tiananmen Square, where the pro-democracy students are in this May 20, 1989, photo. (Photo: Stringer/Reuters/Newscom)

A portrait of China's late chairman Mao Zedong overlooks the "Goddess of Democracy," modeled after the Statue of Liberty, in Beijing's Tiananmen Square in this June 1989 photo. (Photo: STRINGER/CHINA/REUTERS/Newscom)

A portrait of China’s late Chairman Mao Zedong overlooks the “Goddess of Democracy,” modeled after the Statue of Liberty, in Beijing’s Tiananmen Square in June 1989. (Photo: Stringer/China/Reuters/Newscom)

Crowds of jubilant students surge through a police cordon before pouring into Tiananmen Square during a pro-democracy demonstration in this June 4, 1989 photo. (Photo: STRINGER/REUTERS/Newscom)

Crowds of jubilant students surge through a police cordon before pouring into Tiananmen Square during a pro-democracy demonstration on June 4, 1989. (Photo: Stringer/Reuters/Newscom)

A blood-covered protester holds a Chinese soldier's helmet following violent clashes with military forces during the 1989 pro-democracy demonstrations in Beijing's Tiananmen Square. (Photo: STRINGER/REUTERS/Newscom)

A blood-covered protester holds a Chinese soldier’s helmet following violent clashes with military forces during the 1989 pro-democracy demonstrations in Beijing’s Tiananmen Square. (Photo: Stringer/Reuters/Newscom)

A protester wears a shirt showing numbers significant to the Tiananmen Square tragedy during a protest in front of the Chinese Embassy in Kuala Lumpur, Malaysia, 04 June 2014. The protest was held last year to commemorate the 25th anniversary of the Tiananmen Square tragedy where China's military did a crackdown on pro-democracy protesters in 1989. (Photo: SHAMSHAHRIN SHAMSUDIN/EPA/Newscom)

A protester wears a shirt showing numbers significant to the Tiananmen Square tragedy during a protest in front of the Chinese Embassy in Kuala Lumpur, Malaysia, June 4, 2014. (Photo: Shamshahrin Shamsudin/EPA/Newscom)

Chinese paramilitary police are deployed to the vicinity of Tiananmen Square in Beijing, China, 03 June 2015 to ensure no uprisings from the Chinese people on the 26th anniversary of the bloody incident. (Photo: ROLEX DELA PENA/EPA/Newscom)

Chinese paramilitary police are deployed to the vicinity of Tiananmen Square in Beijing, China, June 3, 2015, to ensure no uprisings from the Chinese people on the 26th anniversary of the bloody incident. (Photo: Rolex Dela Pena/EPA/Newscom)

A Chinese police outpost is set up outside the Forbidden City across Tiananmen Square in Beijing, China, on June 3, 2015. On the 26th anniversary of the government crackdown on pro-democracy demonstrations, human rights groups have called for government accountability for violent actions against protesters on that day in 1989. (Photo: ROLEX DELA PENA/EPA/Newscom)

A Chinese police outpost is set up outside the Forbidden City across Tiananmen Square in Beijing on June 3, 2015. (Photo: Rolex Dela Pena/EPA/Newscom)

Armed police officers march at Tiananmen Square in Beijing on June 4, 2015, the 26th anniversary of the bloody crackdown on pro-democracy demonstrators. (Photo: Kyodo/Newscom)

Armed police officers march at Tiananmen Square in Beijing on June 4, 2015, the 26th anniversary of the bloody crackdown on pro-democracy demonstrators. (Photo: Kyodo/Newscom)

People attend a vigil in memory of the victims of the Tiananmen massacre, in Macau, China, 04 June 2015, marking the 26th anniversary of the government crackdown on pro-democracy demonstrations at Tiananmen Square. (Photo: CARMO CORREIA/EPA/Newscom)

People attend a vigil in memory of the victims of the Tiananmen Square massacre, in Macau, China, June 4, 2015, marking the 26th anniversary of the government crackdown on pro-democracy demonstrations. (Photo: Carmo Correia/EPA/Newscom)

Participants take part at the candlelight vigil as they hold candles in Victoria Park on June 4, 2015 in Causeway Bay, Hong Kong, just months after their own pro-democracy protests. (Photo: David G. Mcintyre/ZUMA Press/Newscom)

Participants at a candlelight vigil in Victoria Park on June 4, 2015 in Causeway Bay, Hong Kong, just months after their own pro-democracy protests. (Photo: David G. McIntyre/ZUMA Press/Newscom)

Hong Kong residents hold a candlelight vigil, standing in solidarity with the student protesters of 1989, as today marks 26th anniversary of 1989 student-led Tiananmen Square protest. (Photo: David G. Mcintyre/ZUMA Press/Newscom)

Hong Kong residents hold a candlelight vigil, standing in solidarity with the student protesters of 1989, on the 26th anniversary of student-led Tiananmen Square protest. (Photo: David G. McIntyre/ZUMA Press/Newscom)