On the night of June 3-4, 1989, units of the People’s Liberation Army (PLA) entered Beijing, killing some hundreds of ordinary citizens as they made their way to Tiananmen Square — the focal point of massive protests that had begun in late April. A lot has changed in China in the intervening 25 years, yet much has stayed the same. This selection of images from Associated Press looks at Tiananmen Square – then and now.

A photo taken June 5, 1989, top, shows a lone Chinese man standing to block a line of tanks heading east on Beijing's Changan Blvd. near Tiananmen Square, and in a May 27, 2014 photo of the same spot, bottom, almost 25 years later, a convoy of cars drive across the same bridge near Tiananmen Square. Pic: AP.

The top image shows cyclists passing by slogans which read "Mobilize all citizens to crush martial law, protect Beijing," under a bridge where tanks are positioned on Changan Blvd., a road leading to Tiananmen Square, and almost 25 years later, in a May 29, 2014 photo, bottom, a jeep full of armed Chinese paramilitary policemen patrol under the same bridge in Beijing. Pic: AP.

The top photo shows students resting in litter on Tiananmen Square as their strike for government reform enters its third week, and 25 years later, in a May 31, 2014 photo, bottom, Chinese tourists use their smart phones and digital cameras to take souvenir photos as slogans are shown on electric screens on Tiananmen Square, in Beijing. Pic: AP.

The top photo shows people cycling past armored vehicles parked in front of Tiananmen Gate near the square where students rallied for democratic reforms, and in the same spot almost 25 years later, a May 24, 2014 photo, bottom, shows the area bustling with tourists. Pic: AP.

The top photo shows Peoples Liberation Army (PLA) troops standing guard with tanks in front of Tiananmen Gate, and almost 25 years later, a May 28, 2014 photo, bottom, shows Chinese paramilitary policemen marching through to clear tourists from the area for a flag-lowering ceremony on the square. Pic: AP.

The top photo shows students resting in litter on Tiananmen Square as their strike for government reform enters its third week, and 25 years later, in a May 31, 2014 photo, bottom, Chinese tourists use their smart phones and digital cameras to take souvenir photos. Pic: AP.