They're called pathologists and they usually do autopsies. [0]

[0]https://www.dailymail.co.uk/news/article-6288235/Saudi-autop...

I don't know if you've ever read a history book, but humans have been pretty viciously murdering each other for just about all of forever. Along with torturing, raping, pillaging... you get the idea.

Whatever bubble you live in, don't forget we're animals.

More and more I am coming to terms with just how f*#$d up humans actually are. I don't know if the internet highlights the bad but between this and the article about the Khmer Rouge the other day, it's hard to have a lot of faith in mankind.

Have you seen The Act of Killing[1]?

[1] https://www.imdb.com/title/tt2375605/?ref_=fn_al_tt_1

I'm sure it's only difficult the first time.

Your hypothesis assumes he did it calmly.