Sci-Hub: Research Crusader or Copyright Criminal?

Sci-Hub is an online repository of over 51,000,000 scientific academic papers and articles, available through its website. New papers are uploaded daily after accessing them through educational institutions. Founded by Alexandra Elbakyan from Kazakhstan in 2011, it began as a reaction to the high cost of research papers behind paywalls, typically US$30 each when bought on a per-paper basis. Academic publisher Elsevier has in 2015 filed a legal complaint in New York City alleging copyright infringement by Sci-Hub.