You should remove the executable permission, see my other reply. Movie files should never be executable, but directories should be.
chmod -R -x+X *
should do the trick, that will remove the executable permission on all files, and set it on directories.
I’m a Norwegian Linux enthusiast and have never heard anything about the government using Ubuntu or Linux. Seems unlikely, from what I know. I know that within healthcare Windows is still widely used, even on the server side…
On the other hand, a lot of software for official services is being developed as open source now, so that’s at least a good step in the right direction. Example: https://github.com/navikt