Undercover FBI agents who spied on activists in Minneapolis

"'Karen Sullivan' along with another undercover FBI agent, who went by the name of 'Daniela Cardenas'"

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The FBI affidavit paints a far more sinister picture, with testimony from “Karen” alleging that members of the FRSO—teachers and trade unionists with long-standing ties to their communities; people whose homes she visited and whose newborn children she cradled in her arms—were actively plotting to take over government buildings in an armed revolution, all while aiding terrorist organizations in Colombia and Palestine. But after two years of undercover work, there was never any hard evidence for any of this.

http://www.vice.com/read/how-the-fbi-goes-after-activists
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The use of undercover cops/informants should be highly regulated. Not for fishing trips like this.