Should I call the police? EDIT IN GREEN with pic

Okay so there are a group of kids that live in my apartment complex that are unsupervised outside all day long causing trouble and going to end up hurt badly.  I have told the mother and the father to come get their kids but they bring them in the house for 10 minutes then let them come right back outside.  Here is a little history:  There are 2 boys & 2 girls, siblings, the oldest is about to start 1st grade.  They live on the other end as me, there are maybe 8 apartments between mine and theirs', mine being close to the street too!! 

They have taken the cement pavers and lined them across the driveway so people couldn't get thru, they have came and taken stuff off my back porch, one thing being a rake and swinging it around at other kids, they just almost got hit on their little bikes by me and 3 other cars going thru the apartment driveway.  They throw rocks at kids, have tried to throw at mine but I had her come in the house.  They hit our car with sticks.  They have came and opened our back door to come in the house. 

I haven't lived in an apartment before and I don't know if its my place to say something or call police or just live with it.  Usually we lived in nice neighborhood and didn't deal with bad a$$ kids like this.  We plan on staying here another couple months til about Christmas but it's driving me crazy!!  Something bad is going to happen to their kid or my kid because they throw things.

I need some suggestions on what to do please ladies!!!

So I posted this about a week ago and since then there has been a few things that happened.  I almost hit the kid because he was coming out between cars on his little bike.  So I told the mom and she said okay she would watch them.  Then last night, the kid threw a rock at my daughter and it hit her knee, so I told her to go tell the mom and when she went in the hallway the kid threw a big rock and it hit her right between the eyes, one side has a scratch and its bruised.  So I went down to the mom and told her she need to watch her f**king kids they are down here throwing rocks at my kid.  Then she said that my kid isn't an angel, yea I know that but she stays in front of my window, I sit in front of the window when I am inside and see what happens.  Then about 70% of the time I am on the back porch so I see what happens.  Needless to say her and I got into arguement with no resolution.  So I did call the police, hopefully point got across because the kids were in front of her house the whole time today that they were outside.  We'll see what happens in the coming weeks. 

I was glad to see I still had 4 tires intact and nothing done to the paintjob on my cars either after calling the police on her!! lol

how close it got to her eye, coulda been a lot more serious and did permanent damage