Run-in with a Mexican Gang-banger kid!

It's really not this huge deal, but it was significant enough that I called the cops and am a little freaked out right now.

Lacie was across the street playing when this little boy, about 4 yrs old, picked up a huge branch from the ground and started whipping her with it. She was trying to hit him back but couldn't reach him cuz that darn branch was so long. Anyway he got her face a good whip and she started screaming and crying like Lacie does. That pissed me off so I yelled, like super loud, "DON'T TOUCH HER!!!!" It freaked him out so he took off running home.

Lacie and Sophie came home and I put them in the bathtub.

Right as they were getting in someone pounded on my door good and loud. So I answered it and there was this short stocky Mexican kid, about 16 yrs old I'm guessing, maybe older, fuming.
He told me that his little brother came home crying to him and saying that Lacie had punched him in the face. I'm like no she didn't. I was standing right outside watching the entire thing. He kept arguing with me saying that Lacie was lying and that his little brother was telling the truth.
There were like 20 or so Mexican kids surrounding our townhome this entire time, and, most of the neighbors were outside standing on their porches watching us.

I've got a mouth on me and where my children are concerned I do NOT put up with any crap at all.
I told him that Lacie is my child and I have every right to defend her and take care of her and when I see anybody beating on my kids I'll yell at them if I want to. He was telling me I had no right to yell at his little brother. I said he had no right coming over here to get in my face about it. He's the brother, not the parent. I told him if his parents didn't like any of it they should come talk to me themselves. I made it clear that I speak Spanish and understand their culture.
He was swearing and yelling and threatening me and the girls. Threatening to kick our a%$'s and other things. I told him he's a very bad example to little kids. It's kids like him that end up in and out of jail and that's a bad example. He was yelling this entire time, not making much sense, just using stupid threatening lines that we've all heard in movies, and said, "so what that I've been in jail?" and was grabbing his crotch and flipping me off when he said it and then was calling me swear words in Spanish and in English.
I noticed that he had a group of che's all hanging around where he came from. They'd slowly started to move towards us from across the street. They were gang signing and so was he and swearing and laughing and pointing at our place.

I shut the door and locked it, of course. Then cuz I couldn't get a hold of Ty (he was at school) I called my dad who told me to call the cops, so I did.

Before the cops came I went next door and asked the Mexican girls there about the kids who had caused these problems. The older one that had been threatening me is named Julio, and the younger one that was whipping Lacie is named Diego. Anyway, they told me that Julio has gotten into lots of trouble with the police and is very scary and dangerous.

The cops went around and asked the neighbors about these kids and they all claimed they didn't know him but saw the little fight and sided with Lacie, of course.
The cop told me that this is common cuz they're just looking after their own butts so they don't get into trouble with these gang-bangers.

So now I'm kinda freaked out. This kid did NOT scare me at all. Not even an ounce. But what does make me nervous is what they are capable of doing when nobody is looking. I'm scared for my girls' safety and for our property that's outside that we have no room for in our small townhome. I'm worried that they come shoot our windows out.

Tyler made a good point. Kids like these have nothing to lose and everything to prove so there's nothing to stop them.

I WANT TO MOVE TO A DECENT NEIGHBORHOOD WITH A DECENT PLACE TO LIVE IN!!!!! I'm seriously sick of living like white-trash around people like this!!!!!!!