Don't say that. They will outlaw education next. Any person with high school knowledge of physics and chemistry can mcguyver himself a lot of really deadly stuff.
Or just buy a drone, strap something light and sharp to it, and just nodedive it into the target.
They already did that. Roguesci (Rogue Science) Explosives & Weapons forum was brought down by US government. That place was the most solid source of information I've ever seen in this particular area. http://www.amateurpyro.com/forums/topic/3641-what-happened-t...
Or just buy a drone, strap something light and sharp to it, and just nodedive it into the target.