possibly there was probable cause to snatch 'em and take 'em for a ride, effectively blindfolded, then just let 'em go inside a federal building after being made to face a wall, patting them down, photographing them, putting them in a cell, and reading them their Miranda rights, all without ever identifying themselves or telling them why they'd been "arrested". All perfectly normal, routine law enforcement tactics.

From the link below:

In recent days, federal security forces have taken to the streets of Portland, clad in camouflage gear suitable for a war zone, and handling anti-racism protesters with tactics reminiscent of dictatorships.
The people of Portland have been busy recording and sharing the appalling scenes, as operatives in unmarked uniforms and camouflage have grabbed people off the street, sometimes appearing to subdue them in the process, and bundled them away into vehicles.

Oregon Public Broadcasting documented the allegations of a protester, Mark James Pettibone, who said he was walking home long after the demonstration Wednesday night, when several "guys in camo," grabbed him, threw him in an unmarked van, pulling his hat down over his eyes.

"I couldn't see and they held my hands over my head," he told reporters.

The people detaining him never identified themselves, he said, or explained why he has being held. He told Oregon Public Broadcasting that they took him to what he would learn was a federal detention center, where, he said, he was made to face the wall while he was patted down, photographed and then put into a cell. He said two officers came in to read him his Miranda rights, he asked for a lawyer and was eventually released.
[Post edited by Hoo TV at 07/18/2020 5:07PM]