Other migrants are attracted by Western culture, and sometimes with unrealistic expectations which expose them to grave disappointments.Unscrupulous traffickers, often linked to drug cartels or arms cartels, exploit the weakness of migrants, who too often experience violence, trafficking, psychological and physical abuse and untold sufferings on their journey. Nor must we overlook the particular vulnerability of migrants who are unaccompanied minors or the situation of those compelled to spend many years in refugee camps or those who remain trapped for a long time in transit countries, without being able to pursue a course of studies or to express their talents. In some host countries, migration causes fear and alarm, often fomented and exploited for political ends. This can lead to a xenophobic mentality, as people become closed in on themselves, and this needs to be addressed decisively.