Not only Martin Wick but also D.R.Wijewardena's (grand father of Ranil and founder of Lake House and pioneer in independence movement)book about Sri Lanka and its elite , which was a recommended reading for Senior Schools was banned and all the copies of it were burned! during D.S and Dudly Senanayake time. 1967 again a short shorty collection by Tennyson Perera which was named "Buddha born from cog wheel"(sinhala) was banned and all the copies of it were burned.
late Prof Ediriweera Sarathchandra's" With a Begging Bowl " am memoire of his Diplomatic Career in Paris during Mrs B's time was also banned but this was reprinted and was available in shops few years ago (I bought a copy ) after his demise!
(SL also banned Salman Rushdie's Satanic Verses and also Thaslima Nasrin's Lajja (shame) (Bangladesh) and also Times Magazine (one issue, as it depicted Prophet Mohamad's picture as cover page (not a caricature but a picture!)
So we can see how history has repeated with new technology substituted as print media has taken a back stage.
what is sad in this episode is now Courts had become a rubber stamp for Police actions which are obviously abuse of power. A good example is arrest and deportation of British Nurse for a Tattoo of Loard Buddha, she had on her arm. This was challenged in Supreme Court about two years after she was illegally deported and compensation awarded!