Re: Joss Whedon's S.H.I.E.L.D to ABC!
Some young thug with a gun who doesn't know his history gets caught up in the anti-Mutant movement and finds himself with an opportunity to kill a super-powered sort. Maybe he saw Captain America on TV trying to talk some sense into people about the rights of Mutants, maybe Cap was standing guard at a Mutant safehouse while a mob gathered outside, whatever. Last year we had a dude kill some Sikhs because apparently they were brown enough to probably be Muslim and therefore probably terrorists. I don't see that such things as terribly unlikely in a world where Cap's origins probably aren't common knowledge.
"There is no reason why good cannot triumph as often as evil. The triumph of anything is a matter of organization. If there are such things as angels, I hope that they are organized along the lines of the Maffia." - Winston Niles Rumfoord.