If Lyle is concerned about the difference between a company's salaries for its white workers and its Colombian workers, he can place economic pressure on the company by convincing a large number of consumers not to do business with the company by highlighting his findings and creating negative publicity. This strategy is also known as a “boycott”.
If Lyle is a worker for this company he could also, on his own or with assistance from his coworkers, place economic pressure on the company by going on strike citing payment inequalities due to race and/or suing the company.