That is an interesting conundrum oort and this is my 5th reply to it, ignoring the essays where I went on and on about this and that with no real answer at the end of it all I think that is my answer, I dont know where, if any, the line is or should be drawn if at all.
We are in the hobby of documenting history through images and quite often english history is gruesome and unfair.
That doesn't mean it shouldn't be documented so I'm now unsure where I stand on this specific subject, it is still kinda new compared to the death camps for example.
I feel its perhaps more important to document the bad things than the good, its nice to find the good in life yourself but just as nice to be armed with info about the bad.
If things are tastefully done in a somber tone anything is potentially acceptable but emoticons, lols, arty farty pictures and matching goon videos really would be a low.