Trump said Monday that he did 'a fantastic job' arresting 'anarchists' in Portland, Oregon, and threatened to do the same in other cities with Democratic governments that he believes are unable to control crime.

If he tries to do it, it would only create more problems, would be counterproductive, would not make us safer, and we would immediately take legal action to stop him, New York Democrat Mayor Bill de Blasio said at a press conference on Tuesday .

From my point of view, this would be another example of the president's illegal and unconstitutional actions, he added, noting that Trump promises a lot to his base but rarely complies.

Last week, the Department of Homeland Security deployed border and federal agents, some in camouflaged uniforms, in the city of Portland (Oregon, northwest), to confront protesters protesting against systemic racism in the country.

Videos showed plainclothes officers arresting protesters and putting them in unidentified vehicles. His intervention has increased tension with the police and sparked outrage, as well as questions about the legality of the operation.

Although most of the detained protesters have been released, Oregon Gov. Kate Brown, lawmakers and other critics compared the performance of federal troops to that of the 'secret police' in the most repressive societies.

The state of Oregon has sued the Department of Homeland Security for human rights violations. The governor said the dispatch of the agents was just propaganda and asked that they leave.