Mindless Maggot Sickos. Why?

It's been a year since those mindless maggots carried out their perverse and cowardly plot to kill and maim people standing at the finish line of the Boston Marathon.   A crowd of people, assembling to applaud the human achievement of enduring 26 miles,  an achievement of self esteem and self worth..... stricken by two sickos.... viciously and cowardly by two vermin who slimed by them with their concealed explosives, and placed them in spots next to innocent, young, thriving victims,
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Why?   What was the motivation to kill and maim?  Was it jealousy?  Of What?  These two Muslims were in America.... on the dole.... subsidized by the people that they wished to kill.   What could possibly have been the outcome that they hoped for?   That we would cower in our homes?......  Unwilling to carry on our way of life?
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That didn't happen.
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All day long, the local news media has been talking about what happened.... and how we responded.... Boston Strong.
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But still no real analysis or answers as to WHY IT HAPPENED?   Why did these two mindless maggots kill. Who was their audience?  What message did they wish to convey?  Who were they trying to impress?
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If we answer these questions truly to ourselves.... things start to get wicked politically incorrect.  Don't they?