Explosives are some of the easiest things to make, you can't put that genie back in the bottle. Attempts to do so that come at a high incidental cost should be

Explosives are some of the easiest things to make, you can't put that genie back in the bottle. Attempts to do so that come at a high incidental cost should be regarded with extreme skepticism. The Boston bombers apparently disassembled fireworks to make their bombs, for example. But even if you take all the obvious choices off the table (gunpowder, anfo, etc.) it's still so very easy to make your own explosives. We live in an industrial age, and one consequence of that is easy access to processes and materials that can be used to do seriously dangerous things. An ordinary drug or hardware store is like a candy shop to someone with sufficient knowledge and motivation to make bombs. You can't just take one thing off the shelf, or ten things, or a hundred things to change that.