Sure, the kid was swinging at the officer, and I suppose that warrants the officer acting in self-defense. But another question is, what are the protesters supposed to do? The government has all the power, and can simply snuff out any resistence. If you just stand in the streets, they really don't care, they are going to take your freedom. Imagine if the US suddenly had a dictator that just decided they were going to take all property rights and freedoms like that -- I think taking to the streets, and even resorting to violence might be necessary (otherwise the powers-that-be have no reason to listen to a bunch of people standing in a street hundreds of miles away).
I’m from the mainland and totally with HK’s cause. But I do think the violence is at least unnecessary if not detrimental to the movement. If tanks roll in, there’s no point using violence as they’ll be crushed. If they don’t, it seems to me there’s enough space for peaceful protests, which can be even more effectual in many ways. And the people of Hong Kong have shown an incredible amount of creativity in non-violent protests. The kid is so young he shouldn’t be involved in such violence. I hope he will make a full recovery.
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the violence is at least unnecessary if not detrimental to the movementJudgement is complicated by documented evidence of undercover Hong Kong police dressing up as protesters and acting like belligerent idiots [1].
[1] https://www.nytimes.com/2019/09/22/world/hong-kong-police-pr...