God is not a terrorist!
When someone says something to this effect, ask them, "So you're saying God is a terrorist!" If they object, point out that terrorists, such as the ones against whome we are fighting a war, routinely kill people without regard to the innocents who perish in an attempt to so terrorize a population that they capitulate to whatever the terrorists want to replace the current regime.
How is it any different if God were to destroy human life in an effort to get people to love and obey Him? It is like a parent beating a child because the child does not love the parent because the child is beaten by the parent. If we are to believe the Bible, God has been a terrorist from the beginning, starting with the flood, and following up with destruction of cities like Sodom and Gommorrah, and even killing nothing but children in the Passover event that successfully terrorized the Egyptians so much they caved to the demands of their captives.
While the ancients clearly found such a God a plausible being and one who must be worshipped for fear of being punished, we do not need to share their fear. We are part of a world which has many things that cause pain and suffering, which befall all creatures, not just humans. Many of these things have long term benefits and have shaped us into the beings we are. Earthquakes such as the one in Japan have happened very regularly since the beginning of the earth and may be responsible for the planet supporting life. The fact that we are now suffering from time to time because of earthquakes, tsunamis, floods, hurricanes, and such is just an unavoidable accident of our evolution. That which makes these events also makes all the things we love so much about this world, its beauty, its tender expressions of cooperation and love, and so much more.
I recommend the writings of Michael Dowd for speaking out on this issue with compassion and reason. Here is a link to something he wrote in response to those who are blaming God and in some cases praising God for the deaths in Japan. http://evolutionarychristianity.com/blog/general/why-christianity-simply-must-evolve/