Humans have been pretty successful at removing man eating predators from the food chain. There are famous examples including the man eating lions of the Tsavo. These two oversized but maneless male killed between 35 and 135 railroad workers in 1898 http://en.wikipedia.org/wiki/Tsavo_maneaters. Usually after the removal of a few suspect animals and a bit of conditioning, the situation improves. This is not true of all species. Tigers, far and away the most agressive man eaters of all cats, by one estimate, are said to have killed 300,000 between 1800 and 1900 http://en.wikipedia.org/wiki/Tiger_attack.
One notorious man-eating tigress known as Champawat (pictured above) killed some 200 men and women before being driven out of Nepal. She moved to another location, this time in India, and continued to kill bringing her total up to 436 before she was tracked down and killed in 1911. The Champawat tigress was, as man eaters usually are, extremely cunning, and she was only found by Jim Corbett because he managed to follow the trail of blood the tigress left behind after killing her last victim, a 16-year-old girl. http://www.lairweb.org.nz/tiger/maneating5.html
One species that continues to consume humans as a part of its diet is the crocodile. This man eater was recently harvested. The photos of the evidence is pretty graphic. Simply CLICK ON PHOTOS BELOW to see the stomach contents: WARNING GRAPHIC IMAGES!!!