I savagely beat a homeless man because I wanted to
What the hell's wrong with you?
I'm not satisfied with my life and I needed to hurt someone, so I picked the homeless man.
I'm sure you're aware of how awful your actions were. I'm going to report you to the police.
You can if you want to but they'll never find me.
The police has many resources and they will catch you for assaulting another person. Other people will turn you in for hurting a poor homeless person.