My friend, who is also our band's graphic artist, was beaten on Haft-e-Tir Square with electric batons, which have left circle shaped burns on his arm and his body, and he can't work for a while.

BBC: Iran views: Anger remains

Some were tortured with electric batons.

ECONOMIST: And it turned sour

He can point to the fact that the manufacture and export of instruments of torture, such as electric-shock batons and leg irons, has now been banned.

ECONOMIST: The arms trade: Business as usual | The