PLEASE HELP!! Need info on tenants rights!

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Thanks so much for reading.
Here is my question. I signed a lease to live in an up and coming small neighborhood for one year. It turns out after huricane Katrina the neighborhood has gone to ****! Someone got shot 2 blocks away 2 nights ago. This is a gated community that never keeps the gate closed!
But my real question is about property management. My property manager or actual owner of my condo switched property management companies. The new property management group is one that i have had before and have not liked AT ALL! I have read over the lease and no where does it say that they can do this with out giving us the option to get out of the lease...and I want out!! Please contact me and tell me what i should do to get out of this lease and if i can THANKS!!