SENATORS say they fear the N.R.A. and the gun lobby. But I think that fear must be nothing compared to the fear the first graders in Sandy Hook Elementary School felt as their lives ended in a hail of bullets. The fear that those children who survived the massacre must feel every time they remember their teachers stacking them into closets and bathrooms, whispering that they loved them, so that love would be the last thing the students heard if the gunman found them. On Wednesday, a minority of senators gave into fear and blocked common-sense legislation that would have...