In short, because of the lunar eclipses over the next couple of years, many Christians are "looking to the stars" for portents of the Second Coming of Jesus Christ. This purported return is to be accompanied by slaughter and bloodshed, so many nonbelievers will not go along happily with such a belief!
The slaughter and bloodshed in question is to be done on an army that is making war against Christians, so it is not really a question of such a belief per se triggering random acts of bloodshed and slaughter on our part.
Of course, if "unbelievers" (or the Atheist Community among them, perhaps supported by Jewish or Muslim communities or both) choose to go hysteric about what Christians believe and how that could act out - after nearly a Century of Evolutionist beliefs and Antichristian prejudice acting out very badly, then I cannot guarantee, nor can anybody else, that we Christians do not retaliate.
Mairie du III / Paris
St Agnes of Rome
Virgin and Martyr