Is it normal for someone to think about murdering others?

I often fantasize myself killing my enemies or just people for fun, is that normal? Do others do this?

I even imagine myself burning down the house I live in while my family are asleep.

Now, I would never actually do this. But I fantasize about it a lot. And at times when I’m really really angry, I have to stop the urge of wanting to kill. I mentally go insane trying to calm myself down and to not do anything. I won’t be satisfied unless I see damage or if I see blood. (So I’ll self harm sometimes for that reason)