Sexual harassment?

So there’s these 3 men that come in every Sunday where I work, they always stay past closing and it’s super annoying. I went out to check on them to see if they needed refills or anything. One told me he had a Mellow Yellow so I took his cup and filled it up. When I go back he had a single dollar on the table. I don’t work for tips so I told him I couldn’t accept it and started to walk away. His response was to grab my arm and shove the dollar in my back pants pocket. I was in shock and I just ran to the back and waited for them to leave. He made me feel super uncomfortable and I was so upset that when I clocked out I had my manager walk me to my car. My boyfriend is upset because I don’t want to take this to the police. I’m 17 btw