When the driver continued to ignore all de-escalation efforts, deputies used what they described as “several less-lethal tools and projectiles," before opening fire with their service weapons.

One of the murder victims had left a chilling message on Facebook one day before his body was found, identifying the man who would be arrested for his murder.

Threatening a showdown with state officials, local sheriffs and police departments, the Justice Department warns that state and local officials must cooperate with the department under the Constitution’s Supremacy Clause and threatens criminal prosecution or civil penalties if they fail to comply.