According to Scientific American, approximately 85% of people are right-handed. This majority appears to be a result of evolutionary natural selection which catered to the majority of people who have speech/language control in the left hemisphere of the brain. Because the left-hemisphere controls the movement of the right hand (and with it, the movement necessary for producing written language), thousands of years of evolutionary development resulted in a population that favors people with left-side language production, and right-handedness.
I did a lot of research. But it doesn’t look like there is any data proving the evilness of left-handed people. I know it’s true. I just need some stats.