I can't help thinking that in caveman times, Greenpeace would have been something of a contradiction in terms.
I mean, can you imagine a "Save The Saber-Toothed Tiger" campaign - when your main object in life was to avoid being eaten by the damn things?
Be that as it may, Greenpeace went caveman-retro in Brussels today.
"Fred and Wilma Flintstone" were arrested as they approached the European Parliament on Monday to protest about the influence of the auto industry on proposals to curb carbon dioxide emissions from cars.
Six Greenpeace activists dressed as cavemen and travelling in a Flintstones-style vehicle were detained along with three others for public order offences, police said.
A stone tablet accusing car lobbyists of driving climate change was confiscated before it could be delivered to lawmakers, a Greenpeace spokeswoman said.
Some intelligent chap has even preserved the occasion on YouTube.
Now, if only the cops could have got into the spirit of the thing. What if they'd brought along some velociraptors instead of police dogs? I'd have liked to see that Flintstones-style buggy breaking several Olympic human-pushing-vehicle speed records trying to get away!