The challenges in creating psychological safety are in some ways more complex for managers because they not only need to lead the process, but also lead themselves in the initiation of the process.
Going against the grain may make people feel unsafe, yet it is through this process that true psychological safety is ultimately achieved — because people feel safe to feel unsafe and to challenge the status quo.
This is why some people will look at a library and see a wealth of opportunity, while others will see the same space and same books and apprehend only barriers to entry or exclusion from a world in which they think they have no part to play.
For me, this can become frankly as depressing as, to quote Blackadder: getting an arrow through the neck and discovering there's a gas bill tied to it.