Are there groups inside the United States that pose danger to our security?

Are there groups inside the United States that pose danger to our security?

Erroll Southers (Former Deputy Director of the California Department of Homeland Security) gives expert video advice on: What is Al Qaeda and why is it so successful?; How did Al Qaeda start?; Where does Al Qaeda get its money? and more...

Domestically speaking, a large part, most of the groups we have here in the United States, are white supremacists groups. World Church of the Creator, National Alliance, Aryan Nations, there are some black separatist groups. What's interesting about those groups is you find that they are usually either Christian identity groups and/or groups that really have a foothold in our correctional or prison systems in the way of radicalization and recruiting.