This video is called Greenpeace blockade Trident submarine at Faslane.
From Earth First! in Britain (with photos there):
York Vikings go berserk over Trident
A twelve strong group from York, dressed as Vikings, have successfully blockaded both entrances to the Faslane nuclear submarine base.
One of the protesters, Richard Lane, said “The Vikings slaughtered tens of thousands of people but they did so over half a millennium. Trident could do the same in a minute.”
Dave Taylor of York Green Party said “Whatever happened to the ethical foreign policy that New Labour once promised?”
“There is nothing ethical about spending billions of pounds on weapons that the human race cannot afford to use,” he added.
The base is subject to a year long campaign rejecting nuclear weapons and, in particular, the renewal of Trident.
This has attracted a lot of international support. So far, nearly 600 people from all over the world have been arrested in as many actions and blockades.
Archaeologists have discovered a mass grave of decapitated Vikings on the southern coast of England dating from AD 910-AD1034. Scientists think they may have been caught and killed by locals: here.