I think you need to call up the full Illinois National Guard with the support of all local law enforcement personnel, to protect everyone from ICE, since ICE is performing duties outside of their scope of work, ignoring rights set forth by the constitution.
Set up roadblocks around all ICE facilities, to prevent them from moving freely, and to keep the protesters away from them too.
If ICE, remains to go unchecked, its only a matter of time they come across a group of armed people and no one (except maybe Stephen Miller) wants this to escalate.