Employees of a French trucking company facing possible closure "have threatened to dump a toxic substance into the River Seine if their demands for extra compensation are not met, union representatives said on Thursday."
Previously: The French Art Of Labor Relations
(Boy this one sure drew a crowd.)
... I was relieved to learn that the strikers did not wish to do this, but felt coerced to violence by the existence of mass media:
[Some dude] said the workers did not wish to carry out their threat and had made it mainly to draw media attention to their plight.