Although Children of Bodom is a band... The band is known for singing about murder, death, struggle, war, and most famously the Lake Bodom Murders:
The Lake Bodom murders were an infamous multiple homicide that took place in Finland in 1960. Lake Bodom is a small lake in Espoo, about 22 kilometres west of the country's capital, Helsinki. On the night of June 4, 1960, four teenagers were camping on the shores of Lake Bodom when an unknown person murdered three of them with a knife and wounded the fourth. The sole survivor, Nils Wilhelm Gustafsson, has lead a normal life until 2004 when he became a suspect. In October 2005, a district court found Gustafsson not guilty.
The murders have proven to be a popular subject in the Finnish media and commonly have made it back to the headlines whenever new information or theories have surfaced.
So put "Child" and "Bodom" together and it's quite easy to see why those ads appeared.