I have a feeling this is going to stirr some controversies 

right about 8:05 , I BELIEVE Snake shoots helpless slave laborers so that he would probably send a message to the patriots.

this is when Big Boss falls from being a hero (Patriot's lap dog) to a terrorist leader (Outer Heaven) , so in this game you're playing as the "Bad guys" doing bad things.

you'll also be killing a lot of children who are soldiers, Snake, Liquid , Raiden and Frank Jaeger (Gray Fox / Null )  might be some of them

by the way that is Paz (peace) who he is taking the "Peace Box" out of her stomache at that second scene, its pretty symbolic since he doesn't really care about Peace anymore and just wants revenge for his falled comrades  and make "FOXHOUND" (which is to counter XOF) which in turn then made Naomi Hunter (Frank's adopted sister) seek revenge for the FOXHOUND by creating FOXDIE

This is Paz , incase someone forgets

Kojima fucked Paz in MGS5.

The waterboarding and child soldiers in that trailer are also solid candidates for 'taboo' subjects.

will it have the same reaction as the "No Russian" thing in Call of Duty? or MGS is not casual enough?

she was already effed up the moment she showed up.

no one interadasted in MGS5? shame!

I never liked Big Boss that much. I mean, he was nice in MGS3, but I never understood why people liked him so much. Guess I'm probably one of the few people that remembers that he fought Solid Snake when he was unnarmed, and was still defeated thanks to a cigar and some combustible.

And gray fox was the lamest boss ever in MG2 : SS , but that was when they didn't have the tech to make awesome fights.

Nah these are barriers Kojima should take to tell an narrative unlike cod using controversy as a marketing plot.