context: The strides that the Johnson presidency made in ensuring equal opportunity in the workforce were further picked up by his successor Nixon. In 1969 the Nixon administration initiated the "Philadelphia Order". It was regarded as the most forceful plan thus far to guarantee fair hiring practices in construction jobs. Philadelphia was selected as the test case because, as Assistant Secretary of Labor Arthur Fletcher explained, "The craft unions and the construction industry are among the most egregious offenders against equal opportunity laws . . . openly hostile toward letting blacks into their closed circle." The order included definite "goals and timetables." As President Nixon asserted, "We would not impose quotas, but would require federal contractors to show 'affirmative action' to meet the goals of increasing minority employment."
question: నిర్మాణ రంగం మినహా, సమాన అవకాశాల చట్టాలను ఉల్లంఘించిన ప్రధాన అపరాధుల్లో ఏ గ్రూపు ఉంది?
answers: craft unions