Can curators decide what tags belong on each post?

I have noticed many posts with irrelevant tags. The users are either not paying attention. They put the wrong tag. Take this post for example:

https://steemit.com/money/@bigs21024/all-lives-matter-we-need-to-take-the-color-out-of-it

This is completely and uniquely about human rights. Yet its only tag is “money.” Why?

I am asking myself whether I should tag this with the relevant tags or everything I can think of.