Twelve facts about guns and mass shootings in the United States

1. Shooting sprees are not rare in the United States. 

Mother Jones has tracked and mapped every shooting spree in the last three decades. “Since 1982, there have been at least 61 mass murders carried out with firearms across the country, with the killings unfolding in 30 states from Massachusetts to Hawaii,” they found. And in most cases, the killers had obtained their weapons legally:

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