The appearance of the graffiti was reported with some interest on several Toronto-based blogs as well as on the news and culture website Torontoist (part of the Gothamist family) and on music critic Alex Ross's blog The Rest Is Noise.
Things became less intriguing and more upsetting when the Mahler graffiti defaced a geometry-themed mural on the front wall of the Jimmie Simpson Recreational Centre in the nearby South Central district of the city.
The tagger/vandal has evidently not yet come forward or been found. Some of the Mahler graffiti has been removed or painted over, according to commenters on Torontoist.