Boston Mayor Michelle Wu, a Democrat, is facing criticism for “Nixonian tactics” after her administration admitted to creating a list of her most vocal critics and providing it to local authorities.

“The list was made in response to a request from the Boston Police Department after the Mayor had been harassed and physically intimidated by individuals for several months outside her home, at city functions such as the annual neighborhood parks coffee hours, and at other public events,” Wu spokesman Ricardo Patron said in a statement to the Boston Herald.

The acknowledgment by the administration that it had compiled the document came after the list was uncovered in an email obtained through a public records request by Wu’s opponents, the outlet noted.