parking near the front = car getting hit, scratched, broken into, stolen
parking near the back = car being noticed, broken into, purposely scratched or dented, easy to steal
parking crooked = being an ass clown can get your car kicked, hit, scratched, spit on, dented, stolen.
bottom line is i dont think your car is safe anywhere in a public parking spot. i always park near the last car in the row, so im still near the group where my car may be not noticed but im away from most of the morons that may hit it. either way dont bring your car to a place where you may be awhile like mall, movies, dinner, etc.