According to this article entitled Exploiting Fallen Soldiers, the National Council of Churches (NCC) has organized a campaign so that “This weekend, leftist churches are expected to ring their bells to note the 2,500th U.S. military death in Iraq.” As the article notes, this is basically a political exercise.
If they really care about unjust deaths, they should have these left-wing churches ring their bells for the 3,000+ humans killed each day via abortion – a procedure the NCC fully supports.