Most of the individuals involved in these cases are not natural born citizens. They are either legal or illegal immigrants, or naturalized citizens, all of whom are susceptible to having their citizenship revoked. Many thousands of German and Italian, not to mention Japanese were interned during WWII as enemy aliens. The internment of natural born Americans of Japanese descent without trial was wrong, the internment (or exile) of enemy aliens is simply one of the unpleasant aspects of war.
In a round about way, you have nailed the issue. We should not be allowing people from cultures antithetical to ours to immigrate here, especially those groups who have proven themselves to be unwilling to assimilate. We are inviting problems and social discord. That is what really upsets me. Issues like this are completely avoidable.
Once someone is here, they have equal protection. You could make a case that based on empirical evidence we are importing future murderers. How do you deal with a presumed future murderer under our constitution?