iirc it's the equally poorly named Reaper drone that is armed and the one to be worried about. The predator drone is basically an R/C police helicopter.
However, people have been freaked out about aerial surveillance for decades. It gets the clicks.
>>chasd0+(OP)
The MQ-9 Reaper is a larger counterpart to the MQ-1 Predator. They are both designed for military use, both capable of carrying weapons, and both appropriately named given their original intended purpose.
They're also both airplanes. Neither of them resemble a helicopter in any way.