took my car to the car wash and emptied various items from the car into a bag. Walking home and I notice this guy walking towards me and scratching all over.i paid him no mind. It's a quiet dusty walkway between buildings and a lot of street kids,homeless and addicts roam the area but never had any major problems. Just as he passes me he snatches the bag and dashes. Sadly for him we live in I a country with an abundance of rocks everywhere .i reach down and a biggish chunk of cement is what I grab first. Said a prayer and let it fly and as luck(depending on whose story arc I guess) would have it ,nailed him right in the back. Luckiest throw ever. He dropped and started wheezing. I ran out over and grabbed my bag. Poor guy probably thought I was gonna hit him because he staggered off. Hopefully he didn't break anything. My arm is sore and feeling a little guilty but I had a checkbook in the bag and ID.