In the 1960s, some attitudes towards the depiction of sexuality began to change. European movies like I Am Curious (Yellow) (1967) and Language of Love (1969) were sexually explicit, but were framed as a quasi-documentaries, which made their legal status uncertain.
In 1969, Denmark became the first country to legalize hardcore pornography, followed by toleration in the Netherlands also in 1969. This led to an explosion of commercially produced pornography. Now that being a pornographer was a legitimate occupation, there was no shortage of businessmen to invest in proper plant and equipment capable of turning out a mass-produced, cheap, but quality product. Vast amounts of this new pornography, both magazines and films, were smuggled into other parts of Europe, where it was sold "under the counter" or (sometimes) shown in "members only" cinema clubs.
