Is this Iran's Berlin Wall moment?

This is the most vibrant and imaginative civil disobedience campaign in the world.

There’s the currency campaign, for starters. Thousands of rial notes have been stamped with a simple green “V” for victory. Others bear handwritten slogans that echo the public chants denouncing the regime. Some have even been reprinted with pictures: one is a cartoon of President Ahmadinejad with “people’s enemy” written underneath. Another carries a picture from the mobile phone images of Neda Agha Soltan as she lay dying on the street from a sniper’s bullet. Underneath is written “death to the dictator” — a common public chant against Ayatollah Ali Khamenei…

Then there is the boycott of goods advertised on state-controlled television. People in line at markets whisper to other shoppers not to buy certain products that help to subsidise the Government’s broadcasting monopoly — and its version of events. The opposition has also called for boycotts on mobile phone companies that provide technology to the Government. It is impossible to assess the impact but it adds a critical economic component to the political confrontation.

Civil disobedience is often brazen. Graffiti is increasingly showing up on public walls — in green spray paint — to berate the authorities or to announce a new demonstration. Large posters of arrested protesters and dissidents demanding their freedom have appeared on campuses, often timed for the appearance of a pro-regime event or speech.