We used to be a hell of a lot more violent towards each other than we are now. Consider the decline in the number of homicides per 100,000 people per year in five Western European regions from 1300 to 2010. As Peter Diamantis over Singularity Hub notes, "On an evolutionary time scale, 700 years is NOTHING, and our progress as a species is impressive."
It's happening in the US too. As recently as the early 1980s and mid-1990s, there were over 50 violent crime victims per 1,000 individuals in the US. Recently, this number has dropped threefold to 15 victims per 1,000 people.