Prompted by a question in AskReddit, when did human suffering cease being entertainment for the masses?

by greyjackal

We're all familiar with the idea of Roman Circuses, Christians vs Lions, Gladiators and so forth, but /u/Thymebeing suggested in this AskReddit thread that folk from 100 years ago would be horrified by modern CGI, thinking folk were being killed for entertainment.

Which got me thinking, hence the question - when did that moral shift happen?

Searocksandtrees