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Relatives and family carry the coffin of Alberto Lopez during a funeral in San Pablo Etla state of Oaxaca on Tuesday, Oct. 31, 2006, in Mexico. Lopez dead when a teargas canister hit his chest, last Sunday. In a sign that tensions had diminished somewhat, columns of federal police Tuesday morning began allowing residents and business owners to pass through the city's central square, or Zocalo, which had been the protesters' center of operations since May.