These series of tapes may at first seem to offer credible and accurate information for the viewer. Instead, these tapes try to take the very complex study of "terrorism" (political violence) and explain it in 60 minute intervals. The only utility of some of these tapes is the background information on some of the groups portrayed in the series. I would highly suggest any viewer to question the credibility of the information on these tapes and also note the dating of the material examined.As a scholar of political violence ("terrorism"), I would suggest viewers instead pickup books and journal articles to gain a better understanding of the phenomenon of "terrorism."