A US federal law was passed on Friday that seeks to censor offensive materials from minors and will require public libraries to install software that blocks pornography from their computers. However, the law is being challenged by privacy organisation the American Civil Liberties Union.

ACLU attorney Chris Hansen said, “this is federal censoring of every single town and hamlet in America.”

The measure introduced by Senator John McCain has been challenged by the ACLU and the American Library Association said it was also considering legal action.

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