Nothing that isn't stories by friends working for securitas (the main company for which pinkerton is a brand), or anecdotes. I am certain I could find a story like that just by googling for it, but real statistics are what are interesting, and I cant be bothered to research it. So let me instead ask, what evidence do you have that they are better than the police? because that is what you are arguing. In general you can become a security guard in a tiny fraction of the time it takes to become a police, and they have much lower requirements compared to becoming a police. Oh and by the way, most of them believe themselves to have the same powers and protections as police, that they do not does not matter much. The real shitheads get pruned pretty quickly, but the middling level assholes instead sometimes get shifted into one of the offbrands.