Greta Thunberg detained by police during eco protest in German villageThe Swedish environmental activist, 20, has been taking part in protests against the demolition of the village of Luetzerath, which is due to be cleared to make way for the expansion of a nearby coal mine.Firing up the fight after government backtrackThe government, which is a three-way coalition including the country's Green party, has had to adapt its attitude to the use of coal after Russia's invasion of Ukraine.The group LuetziBleibt - which translates as Luetzi is Staying - claimed earlier this month that there were "around a couple of hundred people" hunkered down in the village.Ms Thunberg joined protesters on Saturday and gave an impassioned speech in which she said Germany was "embarrassing itself right now".Police have said it could take weeks to resolve the standoff over the coal mine expansion, which activists see as a symbol of Berlin's failing climate policy during an energy crisis in Europe's biggest economy."