I can comment quickly on France, since I know it a little.
Generally, as in Canada, they often fall under the municipalities' purview, and the municipalities will look after them and have a sense of history that gets them to do that.
The youth aspect is really important. That's a great idea that Steve brought out.
In France and in Holland in particular, both countries, they get the youth out there to put wreaths and little Canadian flags on the graves, so they're involved, essentially in commemoration. That's an important aspect whether you're removing graffiti or something else. So stick with the idea.