You are assuming something. You are assuming that a 7-year old is not normally capable of murder unless he/she is mentally incompetent/retarted.
Why invent excuses for this piece of human debris?
The heart is deceitful and wicked, above all things. Wise words.
Maybe I'm just not in a gregarious mood today. Maybe I'm fed up with humanity. Probably both, but what I said still stands. If the child knew what it did was wrong and what the depth of the act was, (And I think it had an inkling, since it needed a 2x4 to finish the job) it should be destroyed as an affront to the human race. To take life without cause is to forfeit your own.
And I don't believe that a 7 year old, in general, should be regarded like an adult when handing out a sentence.
If we were to start executing kids of that age.... goodness, why must I even try and put up a protest for executing 7 year olds?