The biggest mass murders have all been committed with things other than guns:
The Oklahoma City bombing
The 9/11 attack
The Happy Land arson fire in NYC that killed 87 people
An arson fire in Australia in '09 that killed at least 173 people
Since the weapon of arson ranks so much higher than guns as a weapon of mass murder, it is useful to point out that the Glock pistol has much in common with the Bic lighter:
Both consist of a steel firing mechanism attached to a plastic handle that is packed with as much firepower as it can hold. Both can be used as lethal weapons, but the Bic is capable of a far higher death toll.
So should there be a limit on the amount of firepower the Bic is allowed to carry in its handle?