FORT WORTH -- A store cashier struck a deaf customer in the head with a crowbar after he mistook the man's silence for rudeness and disrespect, police said. The cashier, Ricky Benard Young, 20, is charged with aggravated assault with a deadly weapon. The customer, Cody Goodnight, 31, suffered "a large knot" on his head during the incident, which occurred Saturday at the Family Dollar Store at 4117 E. Lancaster Ave. "I can't believe someone would hit him for not speaking," said Goodnight's mother, Kay Goodnight. "When you're deaf, you don't make a point of starting conversations with people." Young's...