This will indeed embolden the anti-nukes out there. There are many things to rationally consider though, such as it probably wasn't a good idea to build reactors on or near the Pacific 'ring of fire'. But, Japan has to rely on seawater as a cooling medium. I also know that Japan does not have as rigorous standards regarding safety and training that we have in the U.S. It may be surprising to some, given Japan's hi-tech image, but there have been many accidents over there dealing with radioactive materials. Some of us in the industry have always felt they had a cavalier approach to it.
It will be weeks before they know the extent of deaths. Entire passenger trains are missing. A town is missing most of it's population.