Haunting Heraklion is first and foremost a work of Marxist fiction. In that, it is suspicious of both libertarian idealism and revolutionary Stalinism, and it looks to small-scale human communities as the best hope for humanity.

Also it’s about a kid becoming homeless in the mean-spirited near-future and falling in with a group of similarly homeless communist revolutionaries before discovering their deep-seated problems and running away with both the authorities and the communists on his trail.

I think they call it "upmarket".