I have a friend who couldn't watch very much of it. I got through the whole thing, but after watching the part about fur I just cried every time I looked at my dog for about a month. I've banned everyone else in my family from watching it because they're all a bit more sensitive than me and I just worry how it would affect them.
I mean, they're all ovo-vegetarian, palm oil avoiding no-animal-products people anyway, I don't see the sense in torturing them any more. It's a great tool for people who are resisting believing the facts you're telling them though, people usually believe video footage. My friend who first showed it to me has turned vegan now as far as I know...
But yeah, once I got past the OMG HOW IS ALL THIS SHIT ALLOWED WHAT THE F**K IS WRONG WITH PEOPLE!!! feelings, it really gave me a lot of hope because it just made me feel reassured that one day we will have a worldwide cultural evolution against this. Probably not in my lifetime though