Daniel Penny, the Marine veteran who killed Jordan Neely, a homeless man known as a Michael Jackson impersonator around New York City, was found not guilty on a charge of criminally negligent homicide.

The verdict was reached after four days of deliberations, during which the more serious charge against Penny, second-degree manslaughter, was dismissed. Last Friday morning, Dec. 6, after three days of deliberations, the jury sent Judge Maxwell Wiley a note saying they were deadlocked on the manslaughter charge. While Wiley encouraged the jury to keep deliberating, that afternoon they...