The Song Of The Assassin

My son, it's important to remember people
when they're gone.
One can set aside an hour or two for them.
Oh, the red and purple men were rivals at court.
The red one thought of life as a violent sport
where the losing guy deserves to die...
so he hired an assassin to do the deed
but an honest man can't be killed for greed.
(Heaven does not like preemptive strike...)
But the killer had an order that he would not dare disobey
so he found an oak tree where he could bash his head
and now he's dead...