"Hall of Fame quarterback Roger Staubach told a crowd of thousands in downtown that men should know better than to strike a woman. But domestic abuse continues to bedevil authorities in Dallas and elsewhere.  "It's amazing that we even need to have this rally," Staubach told the crowd at the rally dubbed Dallas Men Against Abuse, "but the momentum needs to take shape."  By DAVID WARREN | Associated Press – Sat, Mar 23, 2013