Who said “It must be realized in Packingtown that workers are human beings”?

Upton Beall Sinclair Jr.

Explanation:

Upton Beall Sinclair Jr. was widely known for his writing proficiency specifically in the areas of social tracts and politics protest and was prominent as a result of one his book titled: The Jungle, which was published in the year 1906. In the book, Upton Sinclair declared amongst other things that " It must be realized in Packingtown that workers are human beings”

Hence, it was Upton Beall Sinclair Jr. that said "It must be realized in Packingtown that workers are human beings”

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