I&#x27;m not sure it&#x27;s a holocaust joke.<p>Heirs and descendants are not synonymous.<p>EDIT:  read the ownership dispute &amp; history[1] at wikipedia - it certainly reads like various inheritors (heirs?) have gone to some lengths to extend the copyright of the original material by making periodic changes.  I am not a lawyer, consequently I don&#x27;t understand how such changes can affect status of original work (as in - how they can apply retrospectively to the original work - and not just affect copyright <i>of those changes</i>).<p>[1] <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;The_Diary_of_a_Young_Girl#Copyright_and_ownership_dispute" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;The_Diary_of_a_Young_Girl#Copy...</a>