What "doctrine" do you think the pledge of allegiance "indoctrinates" students with?
"I pledge allegiance to the Flag of the United States of America"
That's some fascism right there.
"and to the Republic for which it stands"
I don't have much of a problem with this part.
"one Nation under God"
This is the part I have the most trouble with and what most people probably are referring to when they talk about the indoctrination.
"indivisible, with liberty and justice for all."
None of which seems to be true.