Why Van Gogh? I recon some grown up told them Van Gogh was poor.

Probably because rich people love his work

But why soup?

rich people love soup!

Is there any evidence these tactics work?

I would understand if they were drawing attention to a plight nobody heard of. But climate change? (I remember polling in New York showing a sharp negative reaction to e.g. activists who blocked bridges versus those who protested in public spaces. That, however, was specific to that city and circumstance.)

“The cost of living crisis is part of the cost of oil crisis, fuel is unaffordable to millions of cold, hungry families. They can’t even afford to heat a tin of soup.”

Climate activists have helped to make fuel unaffordable by opposing oil and gas exploration, production, and transport.

If "punching a Nazi" is socially acceptable; then stomping the crunchy out of these fools, on scene and immediate, should be just as acceptable.

> ...two young supporters of the climate protest group threw the liquid over the painting, which is protected by glass, just after 11am.

This is a detail that I've seen get missed in other discussions of this.