Big problem on street?

There's is an apartment behind out street and the people have made a walk way through it and there has been nothing but trouble since. Almost everybouse on the street has been broken into and worst. The other day they called a pizza guy to a house and robbed the pizza man. People are scared to Even come out the house becuase of these people. They come in big gangs sometimes and really threaten us. What can I do? Or we do? I live in baton rouge, La. They police comes like once a month and lives after 5 minities. What's next?