For example in “Made in L.A” there are 3 young Latina immigrants who work in Los Angeles sweatshops they do manual labor for an extremely low wage. Even though they did the same work as others they got paid less because they are immigrants, it is hard work with low wages but they continue to do it to support themselves and their family just like the blue collar workers do nowadays. With the little voice they had, they protested and tried to make a difference for all future immigrant workers not to be treated inferior to them.
People in blue collar jobs get paid less than white collar workers which are office work but they enjoy their job other than others even though it is dirty. Even though the U.S has strict policies on immigrants, they are actually needed because they do many of the blue collar jobs that are needed in the country.