Is it normal to visualize someone else's death

Now I know this is pretty much very abnormal but just wanted to spill it all out.

I have no intention of murder and believe myself to be both physically and mentally incapable of carrying out such act but the visualizations of this person constantly dying are irrepressible, e.g. them walking in front of me and getting hit by a car; sitting in a bus that suddenly explodes; drowning in a pool with no one around etc. I don't despise this person but I can't bear with them appearing in front of me. When I see them close around me I'd wish for them to explode instantaneously. Sometimes I'm hoping so bad for the images become true so that I'll never need to see their disgusting face again.

My brain has been doing this for over a decade now and I've wished (?) death upon a number of different people, am I like not fit for living or something