It has been here for a while, too, although not as widespread:
Beginning with the shoot-out at Bremen in 1913 (5 casualties), Wikipedia lists 20 incidencds in European coutries , including Germany, Sweden,Finland, Denmark, UK, Mehterlands, Greece, Norway, Hungary and France (the latter was a terror attack against jewish schoolchildren). The shootings at Utøya by mr Breivik is not included.
Latin America and Australia comes next at 13, and Canada has had 11 during the same period.
So we've had our share, but small compared to what the US has been suffering.
pibbur who as always feels sad hearing about thngs like this.