Revenge fantasizes

I was walking with my dog. Some moron who said that my dog needs muzzle. I was just walking, she wasnt even aggrresive or anything. I had encounter with this guy before, when he took a stick and wanted to attack my dog, but I stopped him. I was pissed so and hitted him couple of times, but really i did him no damage, and quicly stopped and go away, but he starts to sending me threats that he will find me and will make me pay. I told him to leave me the fuck alone.

I struggle with revenge fantasizes since i was assulted 1.5 year ago. Didnt really touched me, but it influenced me a lot. If I will see that Guy again, i could snap, and beat him, espacially when he sended threats to me right now, and he can do something stupid to me or my dog, like using paper spray or knife to retailate. I saw him before, and I dont really know why, but when I saw him walking i had a feeling like he is crazy. He just runs swinging his hands weirdly, dont know how to explain.

I have introusive thoughts about it, like different situations, where people were rude to me. I thought before about ending my life, becouse I am just tired.