Radicals might also be fools for not realising that sf has had a fair few fellow-travellers for many years, too… but the underlying point is valid. Critiques of intellectual property, top-down power structures and the machinery of democracy are indeed rampant in modern culture, especially online, and especially in the sphere of science fiction. Whether that means sf is a vanguard for coming political change or merely a haven for otherwise unacceptable and marginal radical ideas (or perhaps both) remains to be seen