How to get rid of hatred and have love and compassion towards all beings?

Ah, it might be tricky, but I think, I can give you some general advice.

The basic emotion here seems to be anger. Feeling angry towards something isn't bad. It's just an emotion. However, letting it control you is a serious problem, like you noticed.
Actually, if it's all about anger building up in you, there are some simple methods that apply to your addiction as well:
-breathing exercises - when your heart starts racing, you should take a few slooow and deeep breaths,
-jumping - do a few relaxed jumps - your body naturally relaxes when you're jumping (a method used by stressed sportsmen),
-working out - go and let go off all your steam in a gym, on the track or do some physical work - the best way to get rid of anger is to tire yourself,
-after feeling that you're relaxed, don't go back to the thought that angered you!

Of course, stop watching things that build up anger like information channels (in TV, FB, YT etc.) and maybe avoid the movies you've mentioned.

 

Getting rid of hatred and cultivating love and compassion towards all beings is a process that requires practice, patience, and perseverance. Here are some steps that may help:

1. Recognize and acknowledge the negative emotions: The first step to changing any negative behavior is to recognize and acknowledge it. Acknowledge that you have hatred and negative emotions towards others.
   
   
2. Understand the cause of your hatred: Take some time to reflect on why you have negative emotions towards others. Sometimes our negative emotions are a result of past experiences or beliefs that we hold. Understanding the root cause of your hatred can help you to develop compassion towards yourself and others.
   
   
3. Practice mindfulness: Mindfulness is a practice that can help you to become more aware of your thoughts and emotions. By practicing mindfulness, you can learn to observe your negative thoughts and emotions without judgment.
   

 

Some good suggestions here. I would add limit your time on social media and consuming news if you find that it makes you angry. You also might want to avoid mafia movies.