When people perceive legitimate channels (courts, elections, peaceful protest) as closed off or ineffective, and when state violence continues without accountability, some portion of a movement tends to radicalize. The basic lesson from history here, and risk to national security, is that if the U.S. immigration authorities crack down further on dissent, and kill additional protesters, and the legal forms of grievance prove ineffective in the face of impunity for crimes committed against the American public, dissent might drive radicalization, and devolve from protests to become an insurgency with guerrilla tactics of the kind seen in insurgencies from Northern Ireland to Vietnam. This is not a prediction; I am not calling for violence; it's a risk assessment.
