Greece: On March 24, 2008, the Olympic Flame was ignited at Olympia, Greece, site of the ancient Olympic Games. The actress Maria Nafpliotou, in the role of a High Priestess, ignited the torch of the first torchbearer, a silver medalist of the 2004 Summer Olympics in taekwondo Alexandros Nikolaidis from Greece, who handed the flame over to the second torchbearer, Olympic champion in women's breaststroke Luo Xuejuan from China. Following the recent unrest in Tibet, three members of Reporters Without Borders, including Robert Ménard, breached security and attempted to disrupt a speech by Liu Qi, the head of Beijing's Olympic organising committee during the torch lighting ceremony in Olympia, Greece. The People's Republic of China called this a "disgraceful" attempt to sabotage the Olympics. On March 30, 2008 in Athens, during ceremonies marking the handing over of the torch from Greek officials to organizers of the Beijing games, demonstrators shouted 'Free Tibet' and unfurled banners; some 10 of the 15 protesters were taken into police detention. After the hand-off, protests continued internationally, with particularly violent confrontations with police in Nepal.
Try to answer this question if possible (otherwise reply "unanswerable"): What place had police experience violent problems with protesters?
Nepal.