It's true that not all neighbors will have an open mind, I think that many could be brought around if the would-be chicken owner approached them with respect and consideration before getting the hens. There are so many misconceptions that are often at the core of people's concerns, that I think to raise these concerns yourself with your neighbors, to answer them with real evidence (such as books, articles, etc.) validates those concerns and lets your neighbors know that you are diligent about doing your homework and being a good neighbor. Once tentative approval can be gained, providing some fresh eggs is always a deal-clincher.
Also, again, if anyone would like to meet a few hens in person, as an advocate, I would be happy to have you visit and, if you don't live too far away, I might be available at some point to introduce mine to any reluctant neighbors. Most people find them to be more beautiful, docile, quiet, and clean then they had imagined. This, I'm sure, is due to images we have all seen of disgusting chicken factories teeming with many thousands of filthy birds.
Steven