Organizers said thousands formed a human chain Saturday between the Neckarwestheim nuclear plant to the city of Stuttgart, a distance of 28 miles (45 kilometers). Police didn't immediately give a figure.
The protest was planned long before the post-earthquake accidents at Japan's nuclear plants.
Still, the mishap drew fresh criticism from the opposition of the government's move to keep Germany's 17 nuclear plants open an average 12 extra years. A previous government decided a decade ago to shut them all by 2021.
