Products that may be sold to terrorists include canned beans and Toyota trucks. Your situation might actually be less morally compromising than the Facebook stuff being discussed, because in their case they are the "questionably motivated 'freedom fighters,'" (i.e. they're directly doing the morally questionable stuff) whereas you're just selling stuff to a broad market that may include questionably motivated "freedom fighters." It's sort of the difference between selling lockpicks that may eventually be used in a burglary or might also be used to get Grandma's safe open, versus breaking in yourself.