Everyone knows about the hypocrisy of the world and mainstream media on terrorist attacks' location. It clearly has a huge difference if 40 people are killed in ME by a suicide bomber or in Paris, same as solidarity reactions, lighting candles, singing songs. For example, we can compare reactions to Beirut bombing or Nigeria bombing last night with Paris attack.
But that doesn't justify booing for terror attack victims, all of which were citizens like us, and had a typical life like us. They should not be involved in this.