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It's coming to you live from the BBC World Service Studios in central London.
I'm Tim Franks.
We're only a quarter of the way through Donald Trump's second term,
so predicting what the moments we will remember are is probably foolish.
And yet,
it does feel as if what's happening right now in Minneapolis could well be one of those moments.
In particular, the latest killing by federal agents with Border Patrol.
The sound recorded on phone videos of the shooting of 37-year-old Alex Pretti on Saturday.
He was an intensive care nurse from Minneapolis.
His family said he'd gone out onto the streets to join the protests against the huge surge of federal immigration agents whose mission is to find,
arrest and deport unauthorized or illegal immigrants.
Those whistles you could hear in the footage are to alert others to the presence of these ICE agents,
as they're known.