Police in Germany have opened investigations into a group of teenagers suspected of having shouted racist chants to the melody of the song “L’Amour Toujours,” in what would be the latest in a series of ugly incidents involving the decades-old pop tune. Several guests attending a birthday party in the north-eastern municipality of Pantelitz, some 70 kilometres east of Rostock, reportedly shouted “Foreigners out – Germany for Germans” to the tune of the of the party hit, police said. One person reportedly shouted the banned Nazi salute “Heil Hitler.” According to police, 13 teenagers aged betwee…