Answer:
Journalists who raised awareness with businesses and politicians
Explanation:
Famous Mudracker Upton Sinclair wrote a book called The Jungle that detailed the disgusting work environment that meatpackers would deal with. (Seriously it's absolutely revolting). This exposed the meatpacking industry to the public and regulations were put in place in the outcry. Mudracker is slang for "people who dig deep into facts."
