[throwaway101416]

Here the librarians are not defending free speech but take a political position on this issue.

For example, they could have put up a book "Book about White Lives - The European Experience".

This wouldn't go over well in the current political climate, I assume.

So since the police officers are on the other side of this issue, it makes sense that they wouldn't want to be implicitly defending the opposite side.

[qwertyuiop924]

...but they changed it. Also, they're not actually on the other side of the issue. Not really. That kind of us-vs-them mentality is what got us here in the first place.