I picked the 3rd poll option, because I think its a mix of the two. The old saying of "whatever you put in will eventually come out" applies to the mind and emotions too, not just the body.
Everyone processes input in different ways, but some things are supposed to bother us; its how we know we're not crazy or sick. For example, I'm pretty sure most think ripping a guy's head off is pretty extreme, but I strongly doubt playing "Mortal Kombat" automatically turns people into murderers. It has to do with how that individual absorbs certain information, and how much of it they take in at once. Anything can become very dangerous when done in excess, but some things aren't supposed to be done at all (like child sacrifice or rape). Some folks play violent games as a method of releasing stress; I used to do that with the early "Resident Evil" entries, but it eventually became too much for me.
Darkness in any emotional, mental, or spiritual form is not something to be reckless with, and mental issues like AS can make things even more complicated. We can't escape violence completely, but constantly dwelling on it will only lead to disaster.
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God, guns, and guts made America; let's keep all three.