The grave of Jim Morrison, singer of the Doors, had to be surrounded by a permanent fence. Why?

The answer

Having become a place of pilgrimage for rock fans, the grave long drew noisy crowds, graffiti and even thefts of keepsakes from neighbouring graves, prompting the cemetery to put up a permanent security barrier.

This question belongs to the “Famous Figures” series of the Père-Lachaise quiz: ten questions, a story behind every right answer.