Homeland Security

Please Answer this:
Please share your research question with your classmates. How did you identify a gap in the current research and how will your thesis fill that gap? Refining your research question will provide a solid foundation from which to conduct your research.
This is the research question that we develop last time: 
Research Question
To better understand the importance of radicalization to terrorism, this research develops research questions that will help to answer some of the concerns about domestic terrorism. They include:
1) What are the common threads in the cases of domestic radicalization to terrorism?
2) Which radicalization models of terrorism explain domestic terrorism towards the United States?
3) What do these models explain about countering and preventing domestic terrorism?
4) Why do some communities such as the Islamic and the KKK engage in violence to further their beliefs?
500 words minimum, APA style