Illegal for Uniformed Cops to Hide Badges?

Occupy protestors nationwide have been the subject of increased police presence and action in the last two weeks. Where law enforcement and protestors have clashed, there have been reports of violence and arrests.

But something even stranger has been reported. Protestors and supporters have taken to the net, alleging that police officers are hiding badges and nameplates. Officers are making themselves anonymous, potentially to avoid any individualized complaints.

Can officers do this? Is it legal for police to hide badges and other identification?

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