Humans are neither good or evil by nature. In fact, humans are the most impressionable and changeable species on Earth. If you leave a newborn infant in the wild to the care of other wild animals, it will take on the traits of that animal. To claim that humans are lower on the evolutionary chain than other animals makes no sense. It's the upbringing and environment that shapes people into who they are. An argument can be made that society is heavily flawed, but humans are just as innocent coming into this world as any other animal. Another difference is that out of all species of animals, humans have the greatest potential bar none for achieving pretty much anything.