The link between the demand side of sex and trafficking has already been established by good research. But, few are aware of some of the connections and many think that porn use is only a personal decision without larger consequences.
I commend to you this link to a well-written essay by Luke Gilkerson of Covenant Eyes. (Covenant Eyes provides technology to track and filter unwanted sexual content for Internet users.) In this essay he summarizes the linkages and reminds readers that one of the best ways to get the message out is with a good video. He provides an extensive bibliography of videos on the topic of sex trade, porn, trafficking, and their impact on victims, families, and users.
Good stuff for you to consider.