I sometimes have urges to kill?

its really not tru but i was just wondering if this a problem. I always idoled serial killers and was very intrested by their methods and their evading the police. Like Jack the Ripper was never found and became infamous and like everyone knows him now. I dont want to kill anyone i just like serial killers and find excitment in the whole like scared society thing. Is this a problem and please explain just dont say "NO" lol just please