Childhood is its own country, and for some it's a brutal place to live. At 18, Matthew Lovett of Oaklyn, N.J., is described in news accounts as a peculiar loner, a tall, stooped kid who stood out because he didn't dress or act like his peers and hung out solely with younger kids. Obsessed with certain movies and computer games, Matthew reportedly tried to protect his younger brother, James - born with a disfiguring cleft palate and retaining a speech impediment after multiple corrective surgeries - from the teasing and humiliation his physical condition invited. He's described by former high...