The protests for democratic reformation of China in the Tiananmen square where not seen fondly by the Chinese government. They decided to use military force in order to destroy the protest, and it was not just to move the people away or scare them off, but it was very brutal. Lot of people that were protesting were actually killed the by the military, and that was supposed to serve as an example for any other people in the country that would try and do something like that.
The protest was dominated by young people, students in general, and unfortunately, their will for better and free life meant death for lot of them.
Deurbanisation is the act of people moving away from urban areas and going rural, it happened in the British period because people saw a flood of British machine made goods and artisans lost their work so they moved back to their villages