Title: Terrorism at 21. century-active shooter Objectives: The aim of this work is to analyze terrorism in the 21st century, to describe this phenomenon focusing on active shooter and to find measures taken against shooters at Czech elementary schools. Methods: The theoretical part of the diploma thesis was prepared with the help of a descriptive analytical method, searches of available Czech literature, foreign sources and valid legislative sources. In the practical part, a questionnaire was conducted on the theme of active shooter. The results were statistically processed and then interpreted. Results: Describing terrorism in the 21st century with a focus on active shooters. Keywords: terrorism, protection, population, schools, shooter

Acts of terrorism are used by various individuals, groups and transnational networks to push forward own political views, ideas and ideology on society whilst using multiple forms of violence. Their acts of violence are able to jeopardize and endanger health and safety of peoples, environment and the vitality of critical infrastructure as well. Nowadays the most spelled threat comes from so called foreign fighters whose destabilized and war-torn countries of origin are located in Northern Africa and Middle East. In combination with inefficient management of illegal migration phenomenon and unsatisfactory EU policies on that matter the problem becomes even more amplified. Schengen Area provides EU-members with non-restrictive border regime which fosters migration and trade by a great deal but on the other hand it creates an enormous security risk in terms of terrorism and its prevention. For that matter there should be much more emphasis added to the management of EU outside borders. The second most problematic issue are the matters of radicalization of individuals and minority groups in the EU. There might be a causal relationship between growing rates of frustration between peoples and social marginalization of noted societal groups which might be caused by unsatisfactory assimilation policies of respective EU member states. The goal of this given thesis was to analyze risks to Czech electrical grid which might be posed by an act of terrorism. The analysis was done by breaking down the electrical grid safety measures into respective sectors and parts. Risk for each particular category were analyzed and final risk assessment whilst using help of security professionals. A questionnaire method was used to complete this particular task. The questionnaire dataset was later used to identification of most vulnerable weak-points in the electricity transmission system of the Czech Republic in respect to acts of terrorism. This diploma thesis might be used as a blueprint for improvements in the security management of the Czech electricity transmission system and for educatory purposes at the University of South Bohemia, at the Faculty of Health and Social Sciences.

The aim of work is to aply theory of political terorism and guerrilla to Brother's Masin resistence group activities. This work offers a new view to research issues of Brother's Masin resistence group. Besides the theory of political terorism and guerila we have to account contemporary context. Each group action will be assign to one of the theory. Masin's father had a great influence to resistence group activity. He has to have his own place in this work. It is also necessary to introduce historical context of the time and give the most important reasons to the group activities. Because it is important to look at the contemporary context we have to describe what Czechoslovakia, East German and West German press wrote about it. In conclusion are the most important facts about theory of political terorism and guerrilla. To this theories will be assigned each resistence group activities. The conclusion provides an overview of Brother's Masin resistence group activities using theory of political terorism and guerrilla.