They'll be dressed in bright orange T shirts and eager to stand out. “This is Dallas Cred,” said Mar Butler showing off his t-shirt logo. “When you see this shirt right here you know we are the good guys that are coming to help.” Program Director Mar Butler wearing Dallas Cred t-shirt Dallas Cred is a partnership with the city of Dallas aimed at cutting down on violent crime using violence interrupters. Those who've been there before. The program has been in place for over 20 years ‘behind the scenes’ in Dallas and other cities, including Washington D.C., Baltimore and Chicago.