Sadly, too many people today think that the simple solution is to outlaw the tool used to commit the crime. Doesn't matter that in Boston, pressure cookers were used (not to be insensitive); hell, you can make a particularly nasty bomb with a glass bottle full of gasoline and a rag stuffed into the bottle mouth. Aka Molotov Cocktail. So are we going to outlaw glass bottles and gasoline? They're even more readily obtainable than guns!
And yet the madness of blaming the tool for the crime persists.