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.
[4]: https://weibo.com/1989660417/I2cCLyIGC?refer_flag=1001030103...