I don't see the problem with people harassing these "electrosensitives". They're self-righteous assholes, and interlopers.
The mixed-race people you talk about most likely were not newcomers, and were not doing anything to irritate their neighbors, such as demanding them all to change their lightbulbs. These "electrosensitives", OTOH, are basically invading a small town which doesn't want them there, and then demanding all kinds of changes and generally being a nuisance. I don't see why the townsfolk should be obligated to treat them nicely at all. They're not welcome there. No one forced them to move there, and they should move somewhere else.