Why do people hate other people that they don’t know at all?

They mistakenly believe it defines them, and that without their complaints and hatreds, they would cease to exist.

Satan, like his drone the DNC, seeks to compartmentalize, and divide peoples making them easier to control and conquer.

Because hating is the easiest thing in the world to do. Oftentimes all you need is a widely believed lie about a person and voila! There's an interesting and very adventurous story I could tell concerning my own experience with this sort of thing but it wouldn't be good for my heart. I don't believe that God wants me to go around reopening old wounds. Too bad too. It would be one of the most comically tragic pieces of poetry ever written all starting with the most unlikely nonliving thing of all.

I don't

because they are troubled.

I don't hate anyone, but there are people I strongly dislike. They're not strangers though.

Because people will do wrong unless they adopt a reason to do good. I think that boils down what human nature lives by. The less good upbringing a person has, the more likely they will do awful things to other people. It is through a good upbringing that a person can have the tools and reasons on why to treat people well.

I don't hate anyone.

There are people I strongly dislike, sure... but they are pretty much people I actually know.