Instead of directly saying "I hate," it's more common to express dislike or disapproval in a less harsh way, such as:
* من [something] رو دوست ندارم. (Man [something] ro dost nadarim) - I don't like [something]
* من از [something] خوشم نمیاد. (Man az [something] khosham nemiyad) - I don't like [something]
* من [something] رو تحمل نمی کنم. (Man [something] ro tahmol nemi konam) - I can't stand [something]
Remember, using milder language is often more appropriate and can help avoid misunderstandings.
If you are feeling strongly about a particular subject, consider sharing your feelings in a constructive and respectful manner. You could explain why you dislike something or express your concerns without resorting to hateful language.