China crushes dissent as Tiananmen Square anniversary approaches

As China gets ready to commemorate the 25th anniversary of Tiananmen Square, the communist government is enforcing a relentless grip on its citizens.

Any signs of dissent are being met with lengthy prison sentences, and censorship is running high. The government has even blocked residents from searching the internet about a subway price increase.

David McKenzie has more on China's alarming crackdown.