I used to work for a small business that had security cameras installed all over the office. Good for security, I suppose, since we had a lot of expensive equipment.
Place was toxic as hell, though.
The owner would frequently leave the office to run errands or have “on-site meetings” (AKA go home), and when he'd leave us employees would finally be able to loosen up and talk. But as soon as we'd begin to socialize even a bit, the boss would call the office phone. Every single time.
I ended up working with some people who used to work at our local competitor – Their ex-boss and my ex-boss were cut from the same cloth. One of these new co-workers told me that their boss would always have an app open where he could monitor the security cameras. If he was out of the office and an employee needed to find a folder and verbally mentioned this fact, they'd suddenly get a phone call from the boss saying where the folder was. He was straight up transparent about watching them and listening in to their conversations when he wasn't around.