People who are blindly guided by President Obama. They really have no insight on the matter of politics but think that Barry Obama is just one cool guy.
1) This phrase refers to any event where innocent person(s) were taken quietly and unassumingly to their deaths without the people who know them discovering about it until after it happened.
2) It is also a short story by Roald Dahl, the author of charlie and the chocolate factory.
"The Jews were lead to the showers like lambs to the slaughter during WWII"
"At Gethsemane, Christ knew he had to be led like a lamb to the sluaghter"