Conversion has never worked very well, although that doesn't seem to keep people from trying all sorts of things. Nobody gets a free pass, terror and violence will always be met with the same.

Violence has always been the least effective long term method of changing anyones mind, but it has always been viewed as handy, because reason was always in such short supply. Plowshares may be beaten back into swords, but no amount of hammering makes the senseless sensible.