Do we need to shift our focus from a specific "Islamist terrorist group" to all threat groups within the continental U.S.?

We see the names Nidal Hasan, Hasan Akbar, Mohammad Abdulazeez, John Muhammad and we shift our focus and thinking to concentrate on a specific group because of their religious or perceived religious affiliation and our media perpetuates this image by constantly flooding the news with their images and stories about Islamic radicalism. Flooding the media causes an unjustified mass perception that the number of attacks is on the rise and that they are mainly perpetuated by this specific group. Historical statistics however reveal that more terrorist attacks are perpetuated by white males espousing white supremacy and Extereme Christian values and those dissatisfied with the government than other groups. To name a few incidents the Wisconsin Sikh Temple massacre, the Tennessee Valley Unitarian Universalist Church shooting, the Centennial Olympic Park Bombing, The Oklahoma City Bombing. Jewish Extremist have also committed acts of terror on U.S. soil. By concentrating on any particular group we set ourselves up to become the victims of other groups. To say that all members of any particular group should be excluded is not the appropriate response.Let's look at the facts and not allow ourselves to be led because of the media's direction, racism, and political agendas. http://www.globalresearch.ca/non-muslims-carried-out-more-than-90-of-all-terrorist-attacks-in-america/5333619