We, as a species, cannot run away from evil, nor should we. It's an ever present part of the human existence. Ignoring it would do all of us an injustice. But it's like toasty said, the only way we can do anything about it is by changing one person at a time. You can just wipe away evil with one grand swoop. It has to be gradual, as every human being on the planet has to change, and only you can change yourself. Others cant do it for you.
If it is any consolation, you just have to remember that the world isn't getting worse, humanity isn't getting more evil, we're just more aware of the evil that was already there. You can thank radio, television, and the internet for that. But that also means that more people will want to change the world, and that's a good thing. And really, the world is slowly becoming a better place already. It make not seem it, but hunger is down, murder, rape, theft, crime in general, all of these things are to a lower degree. Even wars, which seem to consume all of the world, have greatly lessened in their frequency, and when they do occur, the death tolls are in the hundreds, rather than in the thousands.
There is hope in this world, it's just that some people only choose to see the bad, and ignore the good.