According to wikipedia, they are a far-left group who "advocate self-reduction, where the price of the service is determined by the consumer. Whereas in other c

According to wikipedia, they are a far-left group who "advocate self-reduction, where the price of the service is determined by the consumer. Whereas in other cases this is done in agreement with (at least some) employees of the service provider, in the case of Planka.nu fare-dodgers are encouraged to evade fares without seeking permission." So I would guess it is mainly a matter of principle (not one that I share). Wikipedia also states "ticket fares in Stockholm have increased dramatically over time. By one measure—single ticket price for a 10-kilometre (6.2 mi) journey—Stockholm has the most expensive-to-use public transport in the world, as of March 2009"