13 yr old boy Hamza al khateeb from Syria?

I am shocked and horiffied that anyone can do this to a 13 year old child. What are we muslims doing to help the situation in Syria and macres going on around the muslim world? I dont think it will work itself out. Why dont we muslims unite? Why are we so scared? When is enough is enough shooting down women, children, and ambulance workers at a point blank range?