Death Threat??

So yesterday (Saturday), I was at work.  It was a normal day of me receiving boxes in the stockroom (for a while).  My boss was telling me how there was a lady and her autistic son who had come in.  Well, the mother works at Target which is in the same shopping center as where I work.  Basically, while she works, she lets her son wander around all of the  stores in the shopping center.  Keep in mind that he is 24 yrs. old.  My boss had told me that it had gotten to the point to where he was scaring off customers and not letting the employees get their jobs done.  By the time I had gotten to work, the kid had already come in the store 5 times.  Well, I had finished my receiving in the back, so I went to go help out on the sales floor.  He (we never got his name by the way..haha) comes in for a 6th time.  He knows everyone else's names, and naturally, he asks for mine.  I give him my name and he starts asking a dozen other questions such as: "Do you have a wife?".  I told him my wife's name.  Well, I go over to help a woman customer, and he follows me and keeps asking me questions as I'm helping this customer.  Then the customer checks out and leaves.  He starts telling me that I cheat on my wife (very loudy i might add) in front of customers because I was talking to another woman (The customer).  This went on for about 5 minutes.  Then a customer called our store so I was helping the customer find a book. I put the customer on hold for a minute and went to check to see if we had the book on the shelf.  The kid followed me and started kicking my feet trying to trip me.  Then I was headed back to the phone, and he grabbed me by the throat and told me he was going to body slam me.  I told him he was going to have to stop or he would have to leave. He kept calling me mean and started cussing at me in front of customers still saying that I'm cheating on my wife.  Two other employees and I had asked him to leave about five times.  He went and stood by the entrance door saying "I don't have to leave, your boss isn't here!".  Then he said "Zach, I'm gonna blow your head off!!", at which point I went to find the security guy that patrols the shopping center.  I couldn't find him so I came back, and the kid had left.  I start taking the trash to the back, and he walks back in.  I headed back to the stockroom so he wouldn't make another scene.  One of the other employees called the police.  The police came and they caught him down by Target.  The police interviewed me, asked if I wanted to press charges...I said no, and that was pretty much the end of it.  He was told not to come back or he would be put in jail.  The saddest part of this whole story for me is that his mom just lets him roam around while she works.  I felt bad because I know she's probably a single mother and has nothing else to do with him.  Anywho, I thought I'd share this with you since it was one of the most bizarre things that I've ever seen. haha