git rm graffiti -rf
BOOM! Graffiti is gone.
Except for the basic style parser which I was writing at that time, which was saved by Kate.
I'm not blaming Git, just my stupidity.
I usually don't version control as soon as I begin a project, since I like to get the structure right, without having really bad log comments. From next time, versioning first.
In retrospect this is a really bad week. Experience isn't the most fun teacher.