Federal agents conducted a surveillance operation targeting progressive groups and labor unions in Minnesota. The operation, which took place earlier this year, was aimed at a network of individuals accused of helping "violent opportunists and agitators". Details of the operation, known as Operation Puppet Master, were revealed in court documents filed in connection with a case involving 15 people charged with impeding an immigration crackdown.

The charges against these individuals include conspiring against the federal government through various actions. Further information about the operation and the case can be found through the Associated Press report, which provides more details on the court documents and the charges filed.