Pakistani rescue workers carry the dead body of a female polio worker, killed by unknown gunmen, at the morgue of local hospital in Karachi, Pakistan, Tuesday, Dec. 18, 2012. Gunmen kil

 

              Pakistani rescue workers carry the dead body of a female polio worker, killed by unknown gunmen, at the morgue of local hospital in Karachi, Pakistan, Tuesday, Dec. 18, 2012. Gunmen kil
Pakistani rescue workers carry the dead body of a female polio worker, killed by unknown gunmen, at the morgue of local hospital in Karachi, Pakistan, Tuesday, Dec. 18, 2012. Gunmen killed several people working on a government polio vaccination campaign in two different Pakistani cities on Tuesday, officials said. The attacks were likely an attempt by the Taliban to counter an initiative the militant group has long opposed. (AP Photo/Fareed Khan)