What would prevent this from being abused or negligently applied to innocent citizens? Blanket policies like this have had severe consequences in the past. Before something like this should even be considered there are a few important things that need consideration. What constitutes "terror group" needs to be explicitly defined. And that definition absolutely needs to cover domestic terrorism/hate crimes. Finally, the concept of revoking citizenship as a punitive measure for any type of crime seems extremely draconian. Revoking citizenship in this way sets a dangerous precedent.