The Longfellow version is so pervasive a meme that Palin might do well (when format permits) to point out the misleading liberties taken by this version. As a poem qua poem, it’s OK. As history, of course it stinks (and many people know of only one “correction” to the poem in the vein that Paul Revere only began the ride while another man finished it).
Actually, it wasn’t until I took our kids on the tour of the Battle Road in 2002 that I learned that Paul Revere was captured by the British and never even made it to Concord! I don’t remember learning that in the 10th grade, but it had been over 30 years since then, so if I even learned it, I’d forgotten it.