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A group of people protested outside Medway Council today, with one taking a seat on the roof of the entrance.
Two police cars were called to the protest, where four people were spotted handing out leaflets.
One man told KentOnline they were calling on the government to investigate the way in which children are taken into care.
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A spokesman from the police said: "Officers have been made aware of a protest on a roof in Dock Road, Chatham.
"Officers were called to the scene at 7.21am on Tuesday 5 September 2017."
Patrols were at the scene throughout the day to ensure the safety of the man and the public. Police negotiators were also at the scene.
The man came down from the roof voluntarily at 7.30pm.
He was later arrested on suspicion of aggravated criminal trespass and causing a public nuisance.
The man, who is in his 60s and from the Gillingham area, is currently in police custody.