Given the threat of climate change and the government's inaction, direct action such as this is, unfortunately, necessary. Large SUV's emit substantially more greenhouse gases.
Road accident victims are six times more likely to die if hit by a 4x4 rather than a smaller car. This is not an attack on you as a person, nor is it an attack on your right to own a car. This is an attack on your choice of car, given the above concerns.
According to some reports (deliberate misinformation?) tyres were slashed but other reports say they were only let down. The cops are reported as saying this is criminal - is it a criminal offence to deflate a tyre as long as no damage is done?
Links to reports on this story: