You're using an outdated document as your source.
I will not post direct links. Instead, I invite you to browse tags like #HongKongPoliceTerrorism, #HongKongPoliceBrutality, #HKpolice, etc. on Twitter.
We all know not to trust COVID death counts from China. HK police brutality is something like that. We have video evidence of a few murders. As for the actual count, no one knows.