Have Truthers provided any proof that evidence was planted?

Truthers, no planers in particular, like to claim the plane wreckage was all planted- well, its the oddest thing-Truthers have yet to produce a shred of evidence to back their claims. What proof do Truthers have to support their planeted evidence theories? I have encountered many Truthers who try and push the burden of proof on me, and ask me what proof do I have that plane wreckage wasnt planted?

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