Obviously you'll get "good" and "bad" behaviors within any large group. It's a bell curve along a continuous value of the whole range between "good" and "bad" (or whatever metric). That doesn't mean dwelling on the outliers is a reasonable counterpoint. What matters is the middle lump of the bell curve - where does that value settle at? HK protesters have generally been peaceful. The HK police response has generally been excessively violent.
To use outliers as a counterpoint is meaningless at best, subversive at worse. I constantly see people pointing to the ugly end of bell curves and throw their hands up and say, "both sides are the same" or "it's too complicated" or "it's impossible to know the true story." No, this kind of smug apathy is just a silent approval of the status quo, that it's better to just let things be than to push for messy-but-necessary changes.