Humanity is at a crossroads, Greta Thunberg tells Extinction Rebellion

Swedish climate activist's speech comes amid police action to clear protesters from Waterloo Bridge

Governments will no longer be able ignore the impending climate and ecological crisis, Greta Thunberg, the teenage climate activist, has told Extinction Rebellion protesters gathered at Marble Arch in London.

In a speech on Sunday night where she took aim at politicians who have for too long been able to satisfy demands for action with "beautiful words and promises", the Swedish 16-year-old said humanity was sitting at a crossroads, but that those gathered had chosen which path they wish to take.