Q:

Why is the question "How do I find out salary for each HK Police Force rank?" off topic?

Apologies - Why How do I find out salary for each HK Police Force rank? off topic?

"This question does not appear to be about governments, policies and political processes within the scope defined in the help center." – JonathanReez Supports Monica, Alexei, JJ for Transparency and Monica, bytebuster, Erwan

Who are the police in Hong Kong? is on topic. We also have police tag.
CCP and HK "governments" pay HKPF. Recent news validates that HKPF is executing their "policies". 

A:

I think asking for a salary table of government employees is rather stretching the scope of the site. You might argue it's a matter of government policy how much government employees are paid but I think it opens the door to a lot of uninteresting questions that are only tangentially related to politics.
While there is a police tag, it's mostly used, like other tags, to tag political questions related to the tag. In case of your question, I think it's reversed: you have a question about salary (not necessarily a political subject) and tie that to an existing tag.

