|Image from the strike (Dec 2011)|
Elliniki Halivourgia (Greek Steelworks) is located in Aspropyrgos, in the Athens urban area, and the workers have been on strike, over forced journey (and salary) reduction in spite of record profits, since November 2011.
Since then they have occupied the factory. Yesterday evening riot police raided the occupation and arrested six workers.
After that people began massing at the gates in solidarity, as shown in this image:
Source: From the Greek Streets - Occupied London (for background see here).