Haters exist in the world bcoz they're gonna hate, 心 breakers exist in this world bcoz they're gonna break. So why should I waste my time on them. I'm here because i'm gonna shake. U don't even think about them!!!!
If it is something I cannot change - then I try to ignore it.
If it is something I have 说 / written - I probably would either 辩论 the issue 或者 rephrase it in a manner that the hater would understand.
If I have done something really bad - hopefully I have not - I would try to correct my actions.
But, I have found for the most part - people who have been making hateful 评论 on line are usually just hateful people 或者 someone having a bad day. It is nothing that I can do except ignore them.
Either block them since they're not worth my time, 或者 evaluate the reason for it and decide whether I said/did something stupid 或者 if they really are just 'hating.'