Two ways to describe the situation:
•Some well-intentioned activists spray-painted an important message on the Walker's iconic "Spoonbridge" sculpture.
•Some idiots who need to be hoss-whipped at high noon on the Nicollet Mall defaced the Walker's iconic "Spoonbridge" sculpture.
Which is preferable?
Correct: Neither, because both use the word "iconic," which I'm sick of hearing.
Anyway, Claes Oldenburg's "Spoonbridge and Cherry" is a delightful work, a symbol of the city. If it had Paul Bunyan standing next to it with a huge dish of ice cream, it would be kitsch, but it doesn't, so it's art.
Because it's famous, some jerks decided to appropriate it for their particular cause, and they spray-painted ...
... No, not going to give their cause any publicity. Let's just say it's one of those things people see on YouTube, post on Facebook, and ask people to click "Like" so that a grave injustice 7,000 miles away might be resolved.