'If we do not speak up - it will be your city next'
Frey says he didn't become mayor to "get into the business of defending democracy" but says Minneapolis is now on "the frontlines of a very important battle".
In a plea to the mayors gathered, Frey adds: "If we do not speak up, if we do not step out - it will be your city that is next."
Mayor says people 'indiscriminately' pulled off street
The situation in Minneapolis is as bad as it looks on the news, says Frey as he continues his speech.
He says there are between 3,000 and 4,000 federal agents in the city, far outnumbering the 600 local police officers.
"People have been indiscriminately pulled off the street," he says. "American citizens have been yanked away from their homes after that solely because they look like they are from Mexico or Ecuador or Somalia."
"That's not how we operate in America.
"In America, we have these foundational principles of law. We abide by our constitution. The rule of law is not just something that you say, but it is something that we practice each and every day."
Frey: Minneapolis made less safe by 'roving band of agents'
Minneapolis is a safe city, Frey continues. But it's less safe when "roving bands of agents" - in reference to the ICE forces in Minneapolis - make families scared to go to school or the shops.
"Everybody is concerned," he adds.
ICE operations about 'silencing a narrative that differs from administration's'
To a swell of applause in the audience, Frey says the ICE operation "needs to end" - not just in Minneapolis but "nationwide".
This isn't about safety or immigration, he says, but "silencing a narrative that differs from the administration's".
Tom Homan has been deployed after two people were shot dead by federal agents in the city in less than a month.
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