> because that's the information they had

That has always been and will always be the excuse for these kind of rights violations by the police. "Oh it's just what we were told, sorry".

And yes, it's worth bringing up e.g. Palestine or climate activists being beaten, arrested etc. in this context, because it's where the limits and tolerances for this kind of behavior are being tested.

Police, at least in Germany, always justify their transgressions with arguments like: "well we had to beat up these demonstrators because they were engaging in criminal behavior", the "criminal behavior" being "chanting a slogan they don't like" or "carrying an umbrella" (I kid you not).

TLDR: If we continue to allow law enforcement to justify their actions with "well that's just what I was told", we are in for a very bad time, because, it turns out, anything can be justified this way.