By Stephen Collinson, CNN
Content warning: The video in this story may disturb some people
It took just a few seconds and a violent, unnecessary death to drag a snowy residential street in Minneapolis into America's new age of political brutality.
Soon, all of America was sharing the horror, as bystander video of an ICE agent's point-blank shooting of 37-year-old American Renee Nicole Good flashed onto millions of mobile device screens.
The grainy scene - with its older homes, ice underfoot and green-clad government agents closing on a civilian car - seemed a little unreal. It evoked old news footage from a repressive Soviet state more than the land of the free.
But the killing quickly became the latest explosive incident in the second term of Donald Trump that is dragging politics to a bitter breaking point.
Minneapolis' Democratic Mayor Jacob Frey, plainly outraged by a killing just a day into a federal crackdown sending 2,000 federal agents to his city, told ICE to "get the fuck out."
But Trump and Homeland Security Secretary Kristi Noem mobilised to define their own misleading narrative. "It was an act of domestic terrorism," Noem said.
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