Domestic terrorist groups that operate within and against democracies are not composed of people who are identically motivated or psychologically similar. Democracies, by their very nature, provide effective and legitimate channels for change and dissent. Therefore, when they are faced with internal terrorist threats it is axiomatic that those who are making the threats have motives other than promoting political, social, or economic change. Research has shown that most domestic groups include at least three types of personalities, a paranoid type, and antisocial type and an inadequate. Each has its strength and weakness. Each plays a role in the groups' ability to function. To more effectively engage and eliminate a terrorist group, it behooves law enforcement to more closely examine and categorize the group membership and approach the weak link using the methods suggested in this paper.