/usr/share/icons/ is in gnome-characters 3.18.1-1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/icons/hicolor/32x32/apps/
/usr/share/icons/hicolor/
/usr/share/icons/hicolor/32x32/
/usr/share/icons/hicolor/32x32/apps/gnome-characters.png
/usr/share/icons/hicolor/scalable/
/usr/share/icons/hicolor/scalable/categories/
/usr/share/icons/hicolor/scalable/categories/characters-latin-symbolic.svg
/usr/share/icons/hicolor/scalable/categories/characters-arrow-symbolic.svg
/usr/share/icons/hicolor/scalable/categories/characters-currency-symbolic.svg
/usr/share/icons/hicolor/scalable/categories/characters-math-symbolic.svg
/usr/share/icons/hicolor/scalable/categories/characters-picture-symbolic.svg
/usr/share/icons/hicolor/scalable/categories/characters-bullet-symbolic.svg
/usr/share/icons/hicolor/scalable/categories/characters-punctuation-symbolic.svg
/usr/share/icons/hicolor/48x48/
/usr/share/icons/hicolor/48x48/apps/
/usr/share/icons/hicolor/48x48/apps/gnome-characters.png
/usr/share/icons/hicolor/256x256/
/usr/share/icons/hicolor/256x256/apps/
/usr/share/icons/hicolor/256x256/apps/gnome-characters.png
/usr/share/icons/hicolor/16x16/
/usr/share/icons/hicolor/16x16/apps/
/usr/share/icons/hicolor/16x16/apps/gnome-characters.png
/usr/share/icons/hicolor/symbolic/
/usr/share/icons/hicolor/symbolic/apps/
/usr/share/icons/hicolor/symbolic/apps/gnome-characters-symbolic.svg
/usr/share/icons/hicolor/22x22/
/usr/share/icons/hicolor/22x22/apps/
/usr/share/icons/hicolor/22x22/apps/gnome-characters.png