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You really ought to check the law, before commenting on it.
A weapon of mass destruction is ANYTHING used with intent to cause harm to one or more people, depending on the situation in which it is used.
In fact, a common bottle rocket, fired out of a pop bottle, is a typical low end WMD. Your government has defined EVERYTHING to be a weapon of mass destruction to make sure that they can charge everyone with the maximum penalty. That way they hope to make pleas and trials easy for themselves and harder for anyone dumb enough to try to harm ANYone in ANY way.
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