From the article: *Large SUVs were particularly affected. According to the police, notes were attached to the cars indicating that they were harmful to the climate. The tyres were not punctured, but merely deflated. The cars were parked in the area between the S-Bahn line and Elbchaussee around Kanzleistraße. *
Personally, I like this protest way more than glueing themselves to the streets, causing traffic jams where cars burn gasoline for hours and ambulances / firefighters / police gets stuck, putting innocent life in danger.
The article is in German. Warning: this link leads to google translate.
I’m sure the 90/10 ratio is simply a rhetorical device for the sake of argument, but since you brought it up, given that the protest does not destroy personal property but merely inflicts considerable inconvenience on the owner, what ratio would be permissible in your eyes? 95 and 5%? 99% and 1%? What if instead of deflating tires someone merely put some sticky jam under the drivers’ side door handle along with a note explaining why the owner has been “jammed”?