I'm seeing a number of people in the comments, on Twitter and on groups I follow who are against the Shalit deal if it means that hundreds of murderers are freed in exchange.
The argument has two components.
One is that they are likely to kill Israelis in the future - as we have seen happen in the past, many times. And families of victims of the murderers are understandably upset at the thought that the monster will go free.
The other argument is that these one-sided swaps encourage terror groups to kidnap more people to facilitate more swaps.
