Angry Neighbors (1969) on Netflix

Lapham Rising tells the story of Harry March, a retired writer whose life starts to unravel when a multimillionaire begins building a mansion across from his quiet island home in the Hamptons. Up until now, he has lived peacefully with his talking dog, Hector, a born-again Evangelical and unapologetic capitalist. To Harry, the gargantuan mansion represents the fetid and corrupt excess that has ruined modern civilization. Which means, quite simply, that this is war.