Side Lane Street Art

The City of Perth has sponsored a number of Street Artists to do their thing on a number of side lanes in central Perth.

Today I wandered down one of those lanes.

It was sad really to see some great Street Art spoilt by the "taggers". Normally they leave Street Art alone, but in this instance the taggers stamped a sad side of the skills on an otherwise tidied up lane.

I don't know the answer!!