Federal law enforcement officers, dressed in camo gear and without any identifying insignia, arresting and covering the faces of alleged rioters and stuffing them into unmarked vehicles and taking them God-knows-where is absolutely unacceptable.
These principles are what separates the government from the rioters. How are you going to hold the government accountable when you don't even know which government agency a certain police officer belongs to?
As long as the suspect is put before a judge, I don't see the issue.
There is no way of ascertaining exactly who these federal agents are. This precludes court redress and is unacceptable.
I mean, they do seem to be sworn law enforcement, I just wonder if they are operating under any sort of valid remit that would make it reasonable to call them police.