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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A chilly, even frosty start to the morning, expect showers at lunchtime - some heavy and a cutting wind.
It'll be a frosty start to Tuesday morning with showers and hail later, but some sunny spells.
It's going to be a frosty start to Tuesday morning with showers and hail expected later in the day.