Christopher Knowles wrote: "1969 was the year the utopian dreams of the 60’s Generation came crashing down to Earth....

"A new band called Led Zeppelin, sporting a harsh new sound and dark, occultic worldview crashed the Peace and Love party setting the stage for a parade of quasi-satanic imitators."

In 1971 the film Clockwork Orange came to our cinemas.

Were the fascists in the security services trying to toughen people up?

Were musicians and film makers being used to control our minds?