Berlin, Germany: Children and students participate in a FridaysForFuture climate protest. Climate activists gather today for a demonstration organized by Fridays for Future in front of the Brandenburg Gate. Tens of thousands of people are protesting across Germany to demand improved policy action by governments to stop climate change. The COP 25 United Nations climate conference is scheduled to kick off in Madrid on Monday. The worldwide protests were inspired by Swedish teen activist Greta Thunberg, who camped out in front of parliament in Stockholm last year to demand action from world leaders on global warming.