/usr/ is in gnome-shell-extension-hide-activities 0.00~git20131024.1.6574986-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/
/usr/share/doc/
/usr/share/doc/gnome-shell-extension-hide-activities/
/usr/share/doc/gnome-shell-extension-hide-activities/README.md
/usr/share/doc/gnome-shell-extension-hide-activities/changelog.Debian.gz
/usr/share/doc/gnome-shell-extension-hide-activities/copyright
/usr/share/gnome-shell/
/usr/share/gnome-shell/extensions/
/usr/share/gnome-shell/extensions/Hide_Activities@shay.shayel.org/
/usr/share/gnome-shell/extensions/Hide_Activities@shay.shayel.org/extension.js
/usr/share/gnome-shell/extensions/Hide_Activities@shay.shayel.org/metadata.json
/usr/share/gnome-shell/extensions/Hide_Activities@shay.shayel.org/stylesheet.css