@neauoire
Not advocating this particular type of direct action, but still, if this kind "propaganda of the deed" leads to conventional propaganda (attached) softly recommending people to perhaps just not getting a SUV, it makes one think that the effect of these actions are indeed going beyond the direct effect on the tyre/vehicle/driver affected.

For a less direct example, articles like this one where spokepeople of the activists get quoted directly to make their case:
theguardian.com/environment/20