Demonstrators gathered outside a petrol station in Exeter as part of the campaign by Greenpeace to free a group of activists being held in Russia.
They claim Shell is complicit because it's a partner of the state-backed Russian oil company Gazprom.
Three people from Devon are among 30 awaiting trial following a protest at a drilling rig in the Arctic.
Parents of two of them joined the protest:
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Emergency services are tackling the fire on Sidwell Street near the centre of Exeter.
Former One Direction star Harry Styles and Hollywood actor Tom Hardy have been in Dorset for filming of their new blockbuster Dunkirk.
The 19-year-old killed father-to-be Shamus McNama at their Bristol family home in February.