Hate killing is act of killing someone or something with extreme contempt towards them, and usually in an extremely gruesome or painful manner. Hate killing is not inherently rascist, just the by-product of an extreme hate and an extreme act of violence.
Dude, they made harpoon guns to hate kill the shit out of octopuses and sharks.
I'm going to hate kill whoever is playing that fucking music!
Dude, you totally hate killed that guy with a trident.