I am sure you have heard about the Hong Kong protests going on right now. They are about an extradition bill that would allow anyone with a jail sentence above some amount of years (was raised from 3 to 7 years before it was removed) to be extradited to Taiwan or China. This extradition bill caused months of protests, since many pro-democracy activists got for the umbrella protest back few years ago a 5 year prison sentence, hence could get extradited by that law to China. In China they may face death sentences or life sentences after forced confession on Chinese state TV. This can be especially dangerous if the individual has a religion banned in China (Islam or Falun Gong) which might bring him into a concentration camp.
The reason the government claimed to want this extradition treaty was due to a murder case. A HK citizen flew with his pregnant girlfriend to Taiwan and murdered her there. When he came back he could not get extradited, because there was no extradition treaty. He also could not get trialed because the court was not responsible for whatever crimes he committed abroad.
It is an excuse needed because the Hongkong government is pro-beijing. Only half of the seats were democratically elected, and some of the democratic elected seats were disqualified due to their involvement in the umbrella movement (pro democracy protests). The other half of the seats are selected in the economic interest of HK. Since HK trades a lot with China, these seats are mostly pro-China, hence allowing China to influence HK politics before the 50 year Autonomy treaty with UK expires (which was signed when UK handed over the HK colony).
The extradition treaty is now canceled due to 25% of the entire HK population camping out on the streets protesting for months. The protests still continue though as the HK population wants the excessive police violence used during the protests to come to court (and 3 other demands such as not being called rioters as protestor, arrested protestors getting free and universal sufferage). The country is basically stuck and nothing is functioning. "five demands not one less".
Now the murder suspect that started all that mess decided to hand him self in to Taiwan's police, and a pastor has donated him the plane tickets to do so. Taiwan refused though to allow an criminal to freely travel into the country to hand him self in hence offered to send a police officer to arrest him there. HK though saw this as a breach of sovereignty (ironically when they were the ones who wanted to get the extradition treaty in the first place). After so much farce, the murder suspect whose actions started this entire mess is unable to hand him self in and is forced to be free.