That 'statement' will only serve to frustrate the person behind the counter who is just doing a job in this bad economy and probably has nothing to do with you getting a ticket. Trust, they will not pass on the 'statement' to the magic parking gods.

Please do like someone else said and use the extra time you'd have lost by writing a letter, or come up with some other way to protest whatever you think is unfair about Somerville parking. I'm pretty sure that if you decide to do this annoying act, it will annoy everyone around you and probably yourself as well when you realize it is not as satisfying as it sounds.

Did you get the ticket for something you did wrong (were there signs posted and you disobeyed them?) or was it in your eyes a wrongful ticket? If it is wrongful, appeal it. If it's not, pay your fee in an adult way and work positively in some way to get the laws changed if you do not like them.