You will probably say yes and that is correct but how many are there and how are they not harmful? There is about one. Is having a knife in your pocket acting like its wrapped up when you have just bought some, cardbord wrapping paper or other things to wrap a knife harmful?Well yes because the Police can ask for a receipt but there is a other piont ,let's say you got it from 'Morrisons' and the till person ask you if you want your receipt and you can say yes or no and you said No.As well the police could check in morrisons and ask them and say "have you binned a recept of a knife"and they say yes but it was from the wrong person and you get away with it or not because they might of not had one because they dont sell knives a recipt of a knife.
But is setting a tree on fire harmless?Yes but why because nature is fragile like us we are all animals so setting a tree on fire is not a victimless crime as you can hurt\kill animals (including us). Let's say you use a lighter for lighting the tree on fire and you lean on the tree before you light it also forget leave the lighter behined you will be 'Red handed'and took into prison and be asked why you did it and probabaly get locked up for about 2 or 3 years.So this wont be a victimless crime.