They were all illegally incarcerated without due process.

 This would require a lack of legal structure or warrant.  ICE has the legal structure to arrest, even though you claim they are not LEO.  I think it's plausible that some were arrested without reasonable suspicion but not "all".  

 ICE ran over a civilian with an SUV

 Spin.  In this video the human in front of the vehicle was intentionally placing himself in front of a moving vehicle.  The vehicle did not run him over.

https://www.youtube.com/watch?v=V6Ol-oMKUKE

 The question is should the vehicle have come to a complete stop?
 Another question is should humans place themselves in front of law-enforcement vehicles while in motion?

 The human was clearly in violation of 18 U.S. Code § 111.  What he was doing is clearly not peaceful protesting.  Peaceful protest does not inhibit the travel of others.

 I imagine if the guy was wearing a red MAGA hat and did this the driver's actions would have been completely justified.