The fence may not seem momentous. But its symbolism is deep. It adds dignity and definition to a small, grassy yard that is full of memories. It’s where Ramona Burton’s young son drove in his red toy convertible; where she and her husband, Edward, barbecued steaks; where they raised AKC German shepherd puppies like Shii, who was bashful at first but became “the wildest thing in the world.” Burton and her husband bought the one-story brick home 46 years ago, and she’s lived there alone—