A motorcycle gang reportedly connected to the three morons suspected of trying to kill Barack Obama are up in arms -- with no sleeves of course -- claiming any link is pure hogwash.

A rep from the Denver chapter of the Sons of Silence motorcycle club told TMZ, "Those guys have nothing to do with our organization whatsoever. Nothing. None of our guys know who they are. We heard one of them was wearing a Sons of Silence support t-shirt, but you can buy that online or at any of our swap meets."

He also added, "What if one of the guys was wearing a TMZ t-shirt?" We'd probably fire him.