So I'm 18, I do have my license and a job and yes I do earn my own money. So I went to the mall to do some Christmas shopping. I was there about 4 hours from around 9:30 am to almost 1pm. When I went to my car, I noticed that the back window of the trunk was unlocked an opened. I know for a fact I didn't accidentally leave it open because if it was opened it would have shown on my dashboard. It's a Ford Explorer. Then I saw a card on my windshield that said Killer Christmas so I took a closer look and realized it was movie ad. So I went home. Most malls have security cameras in the parking lot right? Is there a way that I can let the mall know? Should I go back? Who would I tell? Should I call the police?