Hackers...the movie. "their only crime was curiosity". I suspect that line was lifted from this.

As for the Manifesto itself, for the most part, looking back, this rings true. I was there... in the 80's...with colourful boxes, acoustic couplers, and pages and pages of phone numbers. I never had the sense of community this document describes...it seemed like a much more solitary pursuit, but you picked up things if you know where to look...and clearly, trails were blazed by those that went before. To paraphase Dali... It wasn't better than drugs, It was drugs.