Because the news of the journalist got beaten up by the protesters went viral. There were more than 4 billion views on the related searches [1].
I will refrain from commenting on politics (don't have the time to contribute) but must say that I found both sides are incredibly biased against each other.
Re. [1,2] see [4], but I wouldn't expect it to convince you.
Re. [3] I fail to see how an apology is an acceptable excuse for the protesters' behaviour, regardless of their cause.
The protesters apologizing are presumably not the same whose behavior they're apologizing for. It just shows that the protest movement is not homogeneous and does not as a whole support indiscriminate violence.
I will refrain from commenting on politics (don't have the time to contribute) but must say that I found both sides are incredibly biased against each other.
[1]: https://s.weibo.com/weibo?q=%23%E6%88%91%E4%B9%9F%E6%94%AF%E...