Actually, there are a couple of big problems in HK now. One is the absolute freedom of speech. Anyone can say anything anytime without having any to assume any responsibility. There is no control on content of speech so people can go on making hatred speech, giving distorted speech with evil intention, reporting fake news, spreading rumors, etc. Another problem is letting politics to infiltrate into schools, allowing school teachers to influence innocent young children with their own personal political views.
The problem with these two are like most of the Modern day people, they figure they know everything in world out of the internet... they don't know what is really going on..