Protesters participate in a demonstration in central Lisbon, March 26, 2013. Some 500 workers of Portugal's Viana de Castelo Shipyard arrive by bus Tuesday in downtown capital Lisbon, protesting in the rain against government's privatization of their plant. The shipyard, located in the port city of Viana de de Castelo in northern Portugal, was established in 1944 under the administration of the country's Defense Ministry. (Xinhua/Zhang Liyun)

Protesters participate in a demonstration in central Lisbon, March 26, 2013. Some 500 workers of Portugal's Viana de Castelo Shipyard arrive by bus Tuesday in downtown capital Lisbon, protesting in the rain against government's privatization of their plant. The shipyard, located in the port city of Viana de de Castelo in northern Portugal, was established in 1944 under the administration of the country's Defense Ministry. (Xinhua/Zhang Liyun)

Protesters participate in a demonstration in central Lisbon, March 26, 2013. Some 500 workers of Portugal's Viana de Castelo Shipyard arrive by bus Tuesday in downtown capital Lisbon, protesting in the rain against government's privatization of their plant. The shipyard, located in the port city of Viana de de Castelo in northern Portugal, was established in 1944 under the administration of the country's Defense Ministry. (Xinhua/Zhang Liyun)

Protesters participate in a demonstration in central Lisbon, March 26, 2013. Some 500 workers of Portugal's Viana de Castelo Shipyard arrive by bus Tuesday in downtown capital Lisbon, protesting in the rain against government's privatization of their plant. The shipyard, located in the port city of Viana de de Castelo in northern Portugal, was established in 1944 under the administration of the country's Defense Ministry. (Xinhua/Zhang Liyun)

Protesters participate in a demonstration in central Lisbon, March 26, 2013. Some 500 workers of Portugal's Viana de Castelo Shipyard arrive by bus Tuesday in downtown capital Lisbon, protesting in the rain against government's privatization of their plant. The shipyard, located in the port city of Viana de de Castelo in northern Portugal, was established in 1944 under the administration of the country's Defense Ministry. (Xinhua/Zhang Liyun)

Protesters participate in a demonstration in central Lisbon, March 26, 2013. Some 500 workers of Portugal's Viana de Castelo Shipyard arrive by bus Tuesday in downtown capital Lisbon, protesting in the rain against government's privatization of their plant. The shipyard, located in the port city of Viana de de Castelo in northern Portugal, was established in 1944 under the administration of the country's Defense Ministry. (Xinhua/Zhang Liyun)

Protesters participate in a demonstration in central Lisbon, March 26, 2013. Some 500 workers of Portugal's Viana de Castelo Shipyard arrive by bus Tuesday in downtown capital Lisbon, protesting in the rain against government's privatization of their plant. The shipyard, located in the port city of Viana de de Castelo in northern Portugal, was established in 1944 under the administration of the country's Defense Ministry. (Xinhua/Zhang Liyun)

Protesters participate in a demonstration in central Lisbon, March 26, 2013. Some 500 workers of Portugal's Viana de Castelo Shipyard arrive by bus Tuesday in downtown capital Lisbon, protesting in the rain against government's privatization of their plant. The shipyard, located in the port city of Viana de de Castelo in northern Portugal, was established in 1944 under the administration of the country's Defense Ministry. (Xinhua/Zhang Liyun)

Protesters participate in a demonstration in central Lisbon, March 26, 2013. Some 500 workers of Portugal's Viana de Castelo Shipyard arrive by bus Tuesday in downtown capital Lisbon, protesting in the rain against government's privatization of their plant. The shipyard, located in the port city of Viana de de Castelo in northern Portugal, was established in 1944 under the administration of the country's Defense Ministry. (Xinhua/Zhang Liyun)

A protester participates in a demonstration in central Lisbon, March 26, 2013. Some 500 workers of Portugal's Viana de Castelo Shipyard arrive by bus Tuesday in downtown capital Lisbon, protesting in the rain against government's privatization of their plant. The shipyard, located in the port city of Viana de de Castelo in northern Portugal, was established in 1944 under the administration of the country's Defense Ministry. (Xinhua/Zhang Liyun)

Protesters participate in a demonstration in central Lisbon, March 26, 2013. Some 500 workers of Portugal's Viana de Castelo Shipyard arrive by bus Tuesday in downtown capital Lisbon, protesting in the rain against government's privatization of their plant. The shipyard, located in the port city of Viana de de Castelo in northern Portugal, was established in 1944 under the administration of the country's Defense Ministry. (Xinhua/Zhang Liyun)

Protesters participate in a demonstration in central Lisbon, March 26, 2013. Some 500 workers of Portugal's Viana de Castelo Shipyard arrive by bus Tuesday in downtown capital Lisbon, protesting in the rain against government's privatization of their plant. The shipyard, located in the port city of Viana de de Castelo in northern Portugal, was established in 1944 under the administration of the country's Defense Ministry. (Xinhua/Zhang Liyun)