Not just a one off. This bloke looks familiar lol
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I would prefer they leave art/paintings alone. They'll get their media-attention as intended, but it's not gonna cause any climate-skeptic to have a Eureka moment, or cause some big-oil CEO to be like "Oh...okay, you got us...that tomato-soup-thing...fair play...we'll stop funding climate change disinformation..." Zip-tying yourself to a goal-post at least had some entertainment value and was creative.