Members of Extinction Rebellion tried to confront Sir David Attenborough at home after he criticised its tactics.
Sir David, 94, said last month that he agreed with the environmental group’s message but its law-breaking protests could alienate many people and deter them from taking action needed to save the planet.
Asked on BBC Breakfast about Extinction Rebellion’s actions, such as blocking roads, railway lines and newspaper printing plants, he said that when campaigning for change “you have to be careful that you don’t break the law”.
Extinction Rebellion criticised the naturalist’s comments at the time, saying that history showed law-breaking had helped to achieve important reforms. Activists decided to go further by confronting him at his home in west London at lunchtime on Sunday.
Sir Iain Duncan Smith, the former Conservative leader, said: “It’s appalling and shows how extreme they have become. What they have ironically done is to prove him right.”
Andrea Jenkyns, a Conservative MP, said: “The shameful targeting of a national treasure like Sir David Attenborough from XR activists demonstrates how ideological, out of touch and extreme they are.”