Implicit and explicit discrimination affects everyone in business---beyond the obvious economic losses. When Black and other employees, contractors and customers are excluded, not allowed to contribute fully or treated with blatant disdain and microaggressions, the organization and its people lose.
Organizational allies can be gatekeepers to keep the playing field fair. Most often they are Human Resources, Purchasing and department managers, floor supervisors, apprenticeship coordinators, and anyone charged with screening, interviewing, hiring, training, mentoring, promoting employees and contractors.
A final thought: Katherine Johnson's story might not be considered so remarkable (nor likely made into a movie) if she was not Black.