Blockade back up in Caledonia, Ont. Broadcast News (via The National Post) Monday, May 22, 2006 CALEDONIA, Ont. -- Tensions simmered for hours and aboriginal demonstrators and frustrated residents of Caledonia, Ont., came to blows Monday after a contentious blockade was taken down and then reconstructed hours later. It was thought taking down the barricade would calm tensions, since it had stopped traffic on the town's main road for more than a month. Demonstrators began blockading the road on April 20 when police attempted to forcibly remove protesters, who have been occupying a 40-hectare piece of land since Feb....