Of course not. Parents have every right to keep horrible images like this from their young children. There should be a warning to parents before this is shown. I have kids and would also be concerned if they viewed violent material. However, my son is almost 17 years old and he needs to know what this country may have to seriously be dealing with if he ever has to defend it.
There are pre-17 year-olds who collect videos of beheadings and maimings. His reaction might be "Man, that is so cool. "