Don't wars do that?
Sinkspur was talking about deliberately killing innocents. Comparing that to killing terrorists is ridiculous.
Wars kill some innocents. Embryonic stem cell harvesting kills all innocents. There are alternatives for harvesting embryonic stem cells from placenta and umbilical cords, not to mention using the far more successful adult stem cell research.
If you want to invest in embryonic stem cell research, you can do so through the private sector which can do all the research it wants if its willing to fund it. Taxpayers don't need to be doing what is private sector work.