If memory serves me correctly, in the Australian context (for what it's worth) "public order offences" are typically generic offences which depend more on police discretion than anything else: "breaching the peace" or being a "public nuisance" for example. The actual incident - say, a bar fight - might be something that could be tried as "assault & battery" or similar, but somehow "breaching the peace" is less difficult to prove, or less restrictive in terms of the elements of the offence. My guess would be that public order offences were simply tried as other offences due to changed legal definitions and/or increased police powers, as winston said.
More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.