/usr/ is in libmarco-dev 1.12.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/pkgconfig/
/usr/lib/x86_64-linux-gnu/pkgconfig/libmarco-private.pc
/usr/share/
/usr/share/doc/
/usr/share/doc/libmarco-dev/
/usr/share/doc/libmarco-dev/copyright
/usr/include/
/usr/include/marco-1/
/usr/include/marco-1/marco-private/
/usr/include/marco-1/marco-private/gradient.h
/usr/include/marco-1/marco-private/preview-widget.h
/usr/include/marco-1/marco-private/boxes.h
/usr/include/marco-1/marco-private/common.h
/usr/include/marco-1/marco-private/theme.h
/usr/include/marco-1/marco-private/util.h
/usr/include/marco-1/marco-private/theme-parser.h
/usr/lib/x86_64-linux-gnu/libmarco-private.so
/usr/share/doc/libmarco-dev/changelog.Debian.gz