puerto ordaz venezuela venezuelan authorities say tuesday arrest 28 people southern bolivar state loot disorder christmas late unrest severe economic crisis scatter protest roadblocks around south american opec nation recent days food shortages power-cuts high price fuel ration local chamber commerce head florenzo schettino tell reuters 10 businesses mostly liquor store loot dark fell christmas day bolivar see unrest various point last four years brutal recession western andean state police soldier guard gas station large line customers allow fill 35 liters per vehicle waste much time ... government test people patience say bus driver pedro pina wait hours buy fuel barinas state critics blame president nicolas maduro rule socialist party venezuela economic mess say persist fail statist policies long turn blind eye rampant corruption inefficiency government say victim economic war political opponents right-wing foreign power intent bring maduro coup reverse deep economic reform say opposition legislator economist angel alvarado western zulia state several hundred thousand people plunge darkness christmas eve spark fury among scrap together money hunt products throughout day prepare traditional family dinner spend whole day stress light go pathetic christmas say lilibeth rodriguez 40 whose family gather ruin twenty-eight arrest venezuela loot violence