Waldo Mejia’s psyche had been showing cracks ... And it arrived at a particularly uneasy moment in New York City, when violent crime is statistically down, yet the opposite can feel true ...

In what police are calling a senseless and unprovoked attack, a man was arrested over the weekend in the fatal stabbing of a 14-year-old boy while he walked to school in New York City last week.

Caleb Rijos, 14, was fatally stabbed on his way to school. The man who the police say is responsible has a long criminal ...