It showed how terrible working conditions were for the immigrants working in the industry. which is good because it opened the eyes of the public as to what was going on in the meat packing plants which was utterly disgusting and thus forcing the meat packaging companies to start having better working conditions and have better and much more sanitary ways of packing meat.
Racism was very common back in the day. Black people were considered “inferior” to white people because of their skin. Influences came from a long time after slavery went on.
