From its inception ICE has taken the role of the German SS, which is to say a paramilitary force loyal to the administration rather than to the Constitution (what FBI was during the J. Edgar Hoover era) It was that way though George W. Bush's admin as well as the Obama admin.
ICE also lent itself out to corporations and trade organizatiobs. They raided the Dotcom estate in New Zealand, and they raided Florida repair shops that did unauthorized (but effective) repairs on Apple products (an event that fueled the right-to-repair movement).
To not talk to ICE. Do not associate with anyone who associates with ICE. Do not cooperate with Law Enforcement that cooperates with ICE.
Eventually when agents and collaborators of the Trump regime are tracked by Nazi-hunters (whatever they call the new iteration of hunters) ICE agents and their collaborators will be the highest priority.
Remember ICE is the agency raiding houses and taking people without due process to CECOT in El Salvador where they suffer tortuous, inhumane conditions comparable to gulags and WWII concentration camps.
The new holocaust is here.