I hope for you and your neighbors that something is done soon before the dogs hurt a person...I have heard that once a dog gets blood (or taste) they want more..not sure....good luck.
Karen, you do have to let this go - for you - don't let what another did - or still does - to upset you like this - any more - you of coarse are also doing what is right and you do need to follow through with that as well - but don't let this be the only thing you do - why don't you get on your machine and make a cute pillow with your sweet ones name and a picture that is close to what he looked like.
Hang in there...they will get their do...maybe someone will actually trap them in a yard so they can be caught and the owners fined!