You actually made two claims.
That it was intended to be indoctrination and that it amounts to exactly that:
Even if we take your claim that it was intended to be indoctrination as true at face value (it may or may not be, I don't really know, but note that I am taking it as an assumption because you've not actually proven it) that still leaves your claim that it successfully amounts to indoctrination unproven, in my experience and in the experience of MANY other Americans:
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The bottom line is that you've failed to prove either point to any real degree of sufficiency.
As it stands you're simply making claims, not proving points.
Now, the claims you're making may be very true and very accurate for all I know.
I see things, and have experienced things contrary to your claims, but I don't insist that my anecdotal experience is absolute proof of anything.
But you've yet to prove them (note: making claims does not prove them as true, nor does insisting that they're true absent any supporting evidence prove the claims are true).