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alien
If it really is acrylic pens, it can be cleaned off without too MUch issue
She's a dumnvass, a terrible artist, and utterly disgusting. big sdurprise, a hot blonde chick who thinks she's creative, yet doesnt seem to produce anything mildly creative
next she will be taking black and white pictures of a lawn chair and thinking she's deep
You seem only offended by her talent
No one is saying that she is polluting. You want to ride a dirt bike? Find a ohv park. They are for riding. National parks aren't a blank canvas for your "art." Its the some of the last places that aren't populated. Her actions are as selfish as a bunch of stunters shutting down a freeway for their "art"
She had zero impact on anyone or thing, other than being somewhat insensitive to how some might view her methods of expression.
I think I'm at least or more sensitive to the environment as an the average Westerner but I see nothing here to be outraged about. Certainly no room to judge or wish her harm.