That, as others have said, is appalling, and I suspect there's more behind it than just some random reader taking against one strip that (if you'll pardon me saying perhaps inappropriately at this point) is the very definition of inoffensive. I'd also second, third or fourth the suggestion to get Police involved. As a Civil Servant working in benefits for 16 years now, I've somewhat surprisingly avoided having anything similar directed my way or via any of the thousands of letters I've supervised on their way, though have heard tales - and I'm taking large sums off money of the poor, not writing for a weekly comic that you can choose to spend your hard earned groats on or not. Personally, I'd want to track em down and sort em out, so any further nonsense, please follow it up with the authorities!
I'm certainly not happy that my own opinions will no doubt have been used as part of these shenanigans, though doubtless much less aggrieved than yourself.
