Why an emphasis on the maquiladora workers?

The Fregoso article on the killings of young women along the Mexico/U.S. border is shocking. I was not aware of the issue and the extreme government corruption that seems to be aiding these woman's deaths. The video corresponds well with Fregoso's writing but the video focuses on the maquiladoras more.  The video made it seem like all women who decide to work at these  maquiladoras are at risk. All of the women are portrayed as innocent, hard-working, trying to provide for their family, and poor. I think these attributes get the viewers sympathy/empathy used in the pathos aspect of writing. With the high number of kidnappings, rapes, and deaths-the maquiladora workers are not the only women being killed. So why do you think they have portrayed the movie to represent the maquiladora female workers as the main target for the awful killings of these women? I personally think they exploit the maquiladora workers due to increased empathy.