Freedom of will

If all people were treated with respect we wouldn't need to group ourselves into clans. Traits like race, creed or gender wouldn't matter as much and we would simply measure value on the character of the person. 

Regrettably, human beings aren't as clever as that and we love to adopt the concept of the "other" so we can deal with our own insecurities and fears via comparison. Whoever is overly different from us is deemed scary and worthy of suspicion. 

It's very likely that this trait was developed in our early history as self-protection. We huddled into groups finding commonality through shared values and blood lines finding comfort and protection from predators who would steal our property or take our food source. 

All animals have this instinct and work in the same manner which means it's genetic and also helps propagate the survival of the species. While human beings have a higher capacity for altruism and kindness through our increased self-awareness and intellectual prowess, the flip side is our intelligence also produces more horrific outcomes because we can scheme much more efficiently. 

If we are dealing with genetics meant to be used for self-protection using them as weapons betrays their original intent. We are usurping a tool and using it for evil purposes instead of the common good. 

The price of having freedom of will.