They'll only trend if the attack was realistic. All the 'terror' attacks are fake, usually Mossad working with that countries secret police. The problem is after every attack the glaring holes in the story appeared. Now they have a cooling off period after the attack. They check it for obvious cracks in the story, if they see too many they'll let that story slide. Nobody believes anything the mainstream media says. Muslims may well do a lot of freaky shit, but blowing themselves up whilst living in Europe or America is certainly not one of them. Suicide, regardless of when it's done is an act of desperation. Suicide bombers in the middle East are usually the last remaining member of a family, they are all alone and have nothing at all to live for, so they strap up and take a few fuckers with them. Personally, I think in the few 'real' western terror attacks the perp's were mentally ill. The attacks were more down to their illness than to Islam.