I work for a small police department, about 50 people and one of the 3 civilian full time staff. In the 13 years I've been in this job, I've learned several things, first of which is my subject line: "What has been seen can not be unseen". I learned this the hard way after someone asked me to assist in ghosting the hard drive of someone who was, in the local parlance, a potential "Diddler", child pornographer. As asked, I ghosted the drive, then when staff found no illegal images, I dug through the drive searching for hidden directories.
Yes. I found them, all right. Now, I have a daughter, 15 today but only 4 at the time, and some of the images I saw, frankly, haunt me to this day. Back then we had no direct resource for digital discovery / evidence collection, and after seeing those images.... I wrote our discovery and extraction policy and worked out a deal with another law enforcement agency to have their people take care of that. I'm well paid, but there is not enough money on this planet to get me to again see what I saw.
Over the course of day to day IT stuff, I have seen emails or documents which yeah, maybe I shouldn't see. Sure, I'm CJIS (Criminal Justice Information Services) certified, etc, but I don't need to see some things. But my boss, the Chief, and my coworkers know that all I'm interested in is making sure we're secure, that the officers and staff can perform their jobs, get email, track cases, track safe keeping, evidence, etc and it's going to work. That's it. I'm not the moral compass. Of course, if I saw someone was up to something illegal with my babies (computers) I would gather evidence and present it immediately! And I'm a very vocal advocate for privacy AND freedom of civilians to record police activity, something my coworkers now agree with me on. But if I, for example, read that one officer gets paid more than another officer for his hourly construction detail, that's none of my business. I mostly stay in my office, work on the things I need to work on, study, and do my job.
IMO that's what we do. We fix things, we keep the show running. That said, you may find yourself with perhaps some leverage. For example, I had one troublesome user who asked my help on installing a piece of software. I went to his desk, asked where the installer was, and he had no idea. So, first thing I did was check the "Downloads" directory. Sure enough, there was the installer, as well as a metric crapton of video files with titles like "Pegging" and "Tranny". He went white... as ... a... SHEET. Not missing a beat, I move the installer to the C: drive and set to. Finish install, enter registration keys, configure, done. As I'm getting up to go, I turned and said "I trust I'll receive no further complaints from this office, right?" He looked, nodded vigorously, and I walked out.