Yes and climate change, also caused by people, is going to more than damage a whole shitload of world heritage.
Oh shit, was it that easy to fix climate change? To vandalize heritage sites was all it took?
Ah yes, it’s holding back the massive sweeping wave of change currently going on to fix climate change.
No, don’t be a dumbass. It’s raising awareness, because it’s obvious nobody is giving a shit about this really fucking massive problem that is directly on our doorstep. Painting Stonehenge isn’t going to accomplish anything except be a nuisance, but being a nuisance is how you compel people to get shit done non-violently. MLK and his sit-ins pushed civil rights forward by being a nuisance. Gandhi pushed Britain out of India by being a nuisance. If you accept the status quo, the status quo will remain. You have to get out and make noise and attract a following if you want the folks in charge to pay attention to your existence.
Trust me, you want them painting on Stonehenge for attention. This is the non-violent option. When this is ignored long enough, the non-violent option will be shelved and that’s when people will suddenly start paying attention.
“Those who make peaceful revolution impossible will make violent revolution inevitable.” - John F. Kennedy, 1962