Is it a violation of prison rules to snitch on guards?

Anybody who is knowledgable about this stuff, I am curious to know about this. We all know how unpopular snitches are in prison. The one commandment that seems to unite the criminal underworld regardless of criminal offense, race, or whether their crimes are political or not is "Though shalt not talk to the authorities." But what about telling on the guards or police (regardless of whether they make a successful complaint)?

Is it a violation of prison rules to snitch on guards?
Is it a violation of prison rules to snitch on guards?
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