Employees at a Italian steel works demonstrated on Thursday against plans to close it down.
Workers from the ILVA plant in Taranto, southern Italy, want their jobs to be saved.
A judge partially halted production last week amid an investigation into pollution.
Ninety-two percent of dioxin in Italy comes from the town.
An estimated 20,000 jobs could be lost if the Taranto plant is closed down.
The government wants production to continue. It has earmarked 336 million euros to pay for a clean up and recovery programme to keep the works open.