In one tweet, Adams provided the company e-mail address of an NBC executive and urged followers to send him messages complaining about the tape-delayed coverage.

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The network was under fire for much of the 16 days of the Games by viewers who took to Twitter and Facebook to complain about its tape-delayed coverage of big-ticket events, which NBC has said was necessary to maximize its prime-time audience.

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The beating of Mr Denny was a long delayed reaction to another brutal beating, in March 1991, also caught on video-tape: that of a black motorist, Rodney King, by four white police officers.

ECONOMIST: Trouble in paradise