I automatically dislike anyone who likes icp or has a hatchet man tattoo
That feels very specific. Why do you think you dislike people with Hatchet Man tattoo and likes the ICP?
Yes, I dislike people who have wrong values.
It's okay to dislike certain people, as long as you understand why and how to go about not liking them in a productive, mostly innocuous way. If you go beyond that, be sure to keep your emotions in check so you don't get violent.
So I should keep my hate to myself? I don't want to hate people. Why hate when I can just take action and kill.
I do not think you would want to kill people as it is very illegal and you will be put to jail. You should only hate on people who are actively causing harm and hurting people, and put them to justice and not become one where you are actually the one causing harm to people. I hope you reverse your mindset where you want to be more peaceful and calmer.