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.
The problem is that even if 90% of people don’t need an SUV or truck, you can’t tell if someone is in that 10% that does need it. You can’t just look at an empty truck bed. Obviously nobody is gonna use their bed 100% of the time. They might have the truck for work purposes and also use it for personal use. They certainly shouldn’t own multiple cars, cause that’s even worse.
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”?
The sticky jam is probably a better idea than the flat tire, due to the lower risk of real damage. Issue would be to make it really uncomfortable while still being easily accessible for the protestors. It has to be as uncomfortable as the tire. But I guess the goo could easily produced at home from household supplies.