"Piracy"
Actually it's not piracy in all cases, some performers let their fans make personal recordings of gigs. Recently Nine Inch Nails (same band that gave away an album online for free and just sold limited edition records, previously covered by El Reg) decided on a free-camera policy for gigs, allowing people to record and enjoy later stuff they had seen live.
If it weren't for that fact then they wouldn't have overcome the extortionate prices charged by venues for professional filming by 'crowdsourcing' (ugh, I know) their media, and come up with this rather good quality DVD composed of fan-shot footable of their last tour and second only performance of the entirety of The Downward Spiral at www.thisoneisonus.org - officially free for download.
So don't just jump on the bandwagon of theives and assholes at gigs consummated by the ignoble call of "stopping piracy" without realising not every situation is the same.