We hated the Jews because they killed Christ, or so we were taught, and so they were forced to convert or killed. Or just killed. Or rounded up into ghettos and then killed. Here in the United States we restricted them from universities, medical schools and social clubs.
We hated the Blacks because they dared to rise up out of the slavery and subservience we had placed them. We believed they were stupid and unable to achieve anything.
The list goes on and on. Latinos, Japenese, you name it, it seems if you are not a white anglo-saxon protestant conservative, you have a group of people en mass that you can hate.
There are good people and bad people in any group. In any religion. In any nationality.
When the astronauts traveled into space, there was one comment they almost all had: from space there are no lines demarcating where one country ends and begins. We are all on one small green and blue ball.
We can have plenty to put our energies towards. We can hate poverty. We can hate ignorance. We can hate the way so many people just seem to be floating through their lives with no effort to help improve it. We can hate the fact that our planet is being poisoned. We can hate the indifference of people to do anything more than bitch.
What do you hate? What are you doing about it?