Good question. But note that Hadiths are but pieces of information written by scholars and historians,so there is enough room for bias and fabrication. Problem is that people are often "shown" non-contextual hadiths and then they get convinced that "this is no man of God!".
There are thousands of hadiths scattered around,many which now have been proven to be fabricated,like story of the old jewess and Prophet(SM). The main ones are the six sahih hadith,you know-Bukhari,Muslim,Tirmidhi,etc.But even in these there are complications,like Tirmidhi claiming that Muhammad(SM)had 15 wives,while almost all the others say it's 11 or 9. Kaffirs take advantage out of these disorderly maintained hadiths and then say "Look!
That's Muhammad!" That's why I always suggest that people should read the hadiths by themselves and even compare it to balance out the good and bad. But "no!",they'd rather waste their time on websites,fishing through all the non-contextual gibberish they can find.
That is why it's always better to read the compiled versions. For several years,I have read many biography books,but the best one is probably Martin Ling's one,because it's directly compiled from both earliest and latest sources and also it's unbiased. If you can read all these chapters with a peace of mind,then you'll know who's evil,and who's not evil.
Don't go on people's words. Read about him on your own.
The Hadith state what happened, no sugar coating or anything like that. Your understanding of the hadith is by nature subjective and while you may find him to be a tyrant, we, Muslims, find him to be compassionate and merciful. Depends on how you see his actions and the context explanation behind it.
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.