i don't under stand whats wrong with feeding a group of giant pirhanas large feeder fish...my friend had 8 giant piranahs and he fed them large pond gold fish. idon't understand thats what they do it gets them worked up in a feeding frenzy they like it its a feeder fish get over it omg...some people need to chill out and dude you need to go watch the discovery channel animals take down large animals all the time. are you going to get pissed because some times a pair of tigers take down an elephant? good grief m8 go see a docter i think they make meds for that
there's a lot of technical things wrong with feeding feeder goldfish to pirhanas. Some people cry cruelty because the goldfish have no chance to escape, like a fish might in the wild. taking your example, no one would care if two tigers took down an elephant in the wild because the elephant would have had just as good a chance of getting away. however if the the elephant had a leg chained to the ground and two tigers were set on it, you better believe people would protest. That's not nature, it's just a bloodsport.
another problem is that feeder fish from petstores inherently come with diseases and will bring them into your tank and infect your fish.
and a third problem is that goldfish are about the worst thing you can feed a fish healthwise for reasons that have been widely discussed throughout the forums. There's even a pinned topic on it somewhere.
but back on topic, i agree that censorship of those images will not make them go away. people won't get bored with those things, they will probably forget and leave them up, or laugh about it with their idiot friends who see nothing wrong dropping a live mouse into a tank full of pirhanas regardless of whether anybody on the internet pays attention. However on many sites, both free hosting websites and those such as YouTube you can report content that you feel is offensive and have those videos removed. One hopes that repeated remonstrations will make a person think about what they are doing, but ignoring it will not.