ROFL! Sorry, but Hillary voters are the ones with the requisite brainpower. Your dumb enough to believe that it was an actual attempt to assassinate Dims.
The absolute hillarity of you calling anyone dumb is the best laugh I've had all day. You couldn't find a clue standing in a clue field, covered in clue musk. We've seen that with you time and time again.
Yes, I think that the FBI is investigating the FACT that SOMEONE sent viable, working bombs to the homes of two past Presidents, a former AG, a former Secretary of State, the former head of the CIA, an elderly Democrat supporter, and a current US Senator, all of whom have been targets of virulent attacks by Donald Trump.
These weren't fake bombs, or pretend bombs. These were real bombs which would have detonated on opening, had they reached their intended recipients. Nobody would do such a deadly or dangerous thing, as a campaign tactic, just because of the potential for something to go amiss and the bomb could explode prematurely killing someone other than the intended recipient.