The action of Amazon is censorship. That the book is available from other venues is irrelevant. E.g. in Soviet Union certain banned books were distributed outsi

The action of Amazon is censorship. That the book is available from other venues is irrelevant. E.g. in Soviet Union certain banned books were distributed outside of official channels (shipped from abroad or re-typed on typewriters); they were thus somewhat available, but would you say they were not censored out in general?