This video shows anti-badger cull protester Jay Tiernan being arrested by police at a site belonging to the Department for Environment, Food and Rural Affairs (Defra) in Gloucestershire.
Tiernan, who leads the activist group Stop The Cull, identified himself to ITV News correspondent Rupert Evelyn before climbing over the fence into the compound.
When three police cars and a helicopter arrived at the scene he tried to escape but was quickly arrested.
More top news
It is claimed that both police and security services, including MI5, have been prevented from vast pools of data on the social media site.
School funding is shooting up the list of voters' priorities as the General Election approaches, according to researchers.
The Conservative and Labour leaders are expected to use PMQs on Wednesday to push their main campaign messages.