The 25th anniversary of the Tiananmen Square military crackdown on student protesters passed without incident in Beijing. Meanwhile, organizers of an annual candelight vigil in Hong Kong said 180,000 people were there to mark the tragic date. Lam Yik Fei/Getty Image
Tiananmen Square was populated with tourists on June 4 this year. In 1989, the same space was occupied by student hunger strikers demanding democracy.
Tourists in Beijing take photos of the daily flag lowering ceremony at Tiananmen Square on June 4.
On the same night, a man takes a picture with his mobile phone in Hong Kong's Victoria Park, as thousands of people hold candles to commemorate the tragic events of 1989 -- the only Chinese territory permitted to mark the occasion. PHILIPPE LOPEZ/AFP/Getty Images
The police presence at Tiananmen Square was prominent on June 4. Plainclothes Chinese paramilitary police officers marched pass a portrait of the late leader Mao Zedong. Kevin Frayer/Getty Images
Chinese paramilitary police officers in uniform stood guard near Tiananmen Square on June 4. Beijing clamped down on any potential dissent ahead of the anniversary, detaining dozens of activists. Kevin Frayer/Getty Images
A foreign photographer is questioned and eventually taken away from Tiananmen Square on June 4.