The Greek government is holding crisis meetings today in an effort to put an end to three days of violent rioting across the country. Greek teenagers began their protests after police shot and killed a 15-year-old boy on Saturday; the riots have injured dozens and caused millions of dollars in damages and looting. In Athens, the city’s giant Christmas tree has been set ablaze, the BBC reports, and police have used tear gas against rioters but have failed to stop them. “Rage is what I feel for what has happened, rage,” a student taking part in the protests told the BBC. “This cop who did it must see what is to kill a kid and to destroy a life.” A funeral for the slain teenager, Alexandros Grigoropoulos, is being held on Tuesday.