At a former company we once had an away day workshop where they allowed anonymous questions for the company director which would show up on a screen for everyone (it was a ~40-50 person company).

We were a management consultancy and trialling what they thought was cool new tech to use with other companies. ( This was a while ago, smart phones were newer and apps were still "cool" )

Well, they very quickly learned to never do that again. Even in a small company there were a lot of tensions unresolved between the lowest and highest rungs. It was a fairly formal hierarchical structure where the common worker didn't tend to ever interact with the big boss.

"Where's the pay rise we were promised last year?" was perhaps the mildest of the embarrassment, and it quickly devolved from there.