Reading through a report of a conference celebrating the centenary of the Swedish union, SAC, I found this paragraph of particular interest -

The SUF is behind the ingenious and well-organised Planka initiative, part of an international campaign for free
public transport (which the Scottish Socialist Party is also affiliated to). Users of the underground train system can
pay a monthly subscription and then faredodge. If they are caught Planka will pay their fine out of the pool of
money. The substantial remainder of the money in the pool works as a general slush fund for the radical movement.
Planka has several thousand members and is going from strength to strength.

SUF is for Syndikalistika Ungdomsförbundet, (Syndicalist Youth Association, I think). More on the Planka Initiative here.