Actaully, not technically arrested, just held in custody by the police. (There is a legal difference, at least in Sweden. They can hold you for 6+6 hours without arresting you.) For the usual reasons. Demonstrations. Once for blocking car traffic, once for blocking the entrance to the Shell stations. During the EU-summit in 2001 I got taken in once for refusing to leave a peaceful protest camp that was too close to the meeting and once forced to sit for two hour on a bridge. That time they just let me go after that though.

/Eva