The term piracy once referred simply to crimes at sea but now also refers to widespread crimes by which intellectual property is copied and sold or given away through electronic networks and in kiosks, shops and flea markets. Countries such as the U.S.A., whose origins were based on technology piracy, are now the most protective. Companies that were once sued for infringement are now suing others. Piracy is cited as a source of income for criminal and extreme political groups. Cultural appropriation of traditional herbs, songs and art is not easily combated. Fake drugs and airline parts create safety issues that are not encountered with pirated books or DVDs. Some scholars and legal experts have called for abandoning copyright or have proposed alternative schemes for intellectual property.