Well I happened to be sitting a couple of rows ahead of the guy who started that chant, and security certainly could've heard it.
The Indians retaliated with 'Show us your handcuffs,' so to me it was a bit of banter between fans, there was a bit of scoreboard, sit down etc stuff, but no references to skin colour or religion. Overreaction is my opinion, and I may call up the Sun to say something about it.
Its banter, and yes the Media make everything something tiny huge and something huge even bigger. Take it on the chin and give it back. Evrybody is so touchy these days about what people say. Its Stupid.