you just need one corrupt guard, or somebody who is willing to close their eyes. guards are only people and being on shift talking with and being exposed to those confined will eventually make them empathic, as they realize many of the prisoners (majority but not all) are just people who never had a chance (grew up in orphanages or on the street, or often just homeless looking to escape the cold of the winter by doing a small crime to get there on purpose). There is one common theme among all of them: poverty and/or trauma. Once you see it (and being a guard exposed to them all the time you will see it unless you're a heartless or dumb sh!t) all the binary thinking and indoctrination starts cracking. This is where the bribe comes in since the person bribing also just fulfills a need (addiction, social interaction or whatever).

Instead of Prisons: https://www.prisonpolicy.org/scans/instead_of_prisons/chapte...

Anyone looking for some Netflix/Chill which is also edutainment about prisons and that doesn't paint the problem as binary (good vs evil) I highly recommend Oz https://www.imdb.com/title/tt0118421/ or (a more recent show about the streets and problems in LE) The Wire https://www.imdb.com/title/tt0306414/ <-- needs at least 2 or 3 times watching because it's incredibly dense!

Edit: this is also an incredibly good read https://mises.org/library/defending-undefendable