This chapter examines three types of global flows of people: migration, human trafficking, and tourism. The vast majority of the chapter will be devoted to the first type – migrants1 – because of their increasing importance in globalization studies (Gold and Nawyn 2013) and the growing number of problems associated with, and encountered by, them.

These different types of global flows2 can also be related to our key interest in this chapter, and the book, on global flows and barriers. In particular, many migrants, especially if they have low skills or are undocumented, have great, and increasing, difficulty moving about the world because they are “heavy” (e.g. if they lack education and training, are prostitutes, etc.) and because they encounter many structural barriers that impede their movement (Cohen 1995). Other migrants are much “lighter,” given their valuable skills that may be in high demand, and are often encouraged through favorable migration policies to move freely through their borders. Similarly, while human traffickers (i.e. pimps) ...

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