Hongkong was taken away from China with cannons and drugs.
Handing it back was the right thing to do legally (for the new territories), morally, and historically.
It's sad to see people effectively praising European imperialism in 2019, reminds me of the old "civilising the natives" antics.
Edit since I'm being prevented from relying to comments:
There is no regression. Those protesters were charged under a colonial-era law.
Hongkong did not even have the Legislative Council under the British, which was created it as a 'gift' to the Chinese.
From the popular vote, it seems to me that the "pro-Beijing" camp has a majority, so that's what "the people want"...
Let's be realistic and put things in perspective, shall we.
Edit 2:
To the person who replied:
Meanwhile, during those 100 years, a new, distinct, non Chinese culture developed. Hong Kong people speak a different language than mainland, have different food, culture references and desires.
HK's culture is as Chinese as can be. In fact it is more traditional Chinese than the mainland. They speak Chinese (Cantonese is 'Chinese', it's the language spoken in Guangdong province hence why it is spoken in HK, 'Canton' is how Guangzhou used to be called...), they eat Chinese. It would be good to know a minimum about a topic before commenting.