This is the second post I haveread where someone is followed and the OP is "annoyed" with that.
I thought the whole reason to OC was to get it out of the closest and to get people interested/comfortable withOC.
Sure, there will be people that are negative towards it, but they may be the same people that are curious about the law, OC in general or something else.
If you get followed and they are not showing any malice or aggression towards you, then may I suggest, take it as a positive sign and welcome them (versus getting annoyed). I am not in any way saying to let your guard down or become a victim -- just handle the situation the same way if you were not OC'ing.
Thanks for listening.