/usr/share/doc/imagemagick/NEWS.Debian.gz is in imagemagick 8:6.9.7.4+dfsg-16ubuntu6.
This file is owned by root:root, with mode 0o777.
It is a symlink to /usr/share/doc/imagemagick/../libmagickcore-6.q16-3/NEWS.Debian.gz
/usr/share/doc/imagemagick/../libmagickcore-6.q16-3/NEWS.Debian.gz