Steyn had a good piece on it too:
http://www.steynonline.com/6841/the-field-where-liberty-was-sown
By the way, my homeschooler and I are reading a few books this month on the topic. She just turned 11. You cannot start too early on the importance of this. Her grandfather is a deputy and thinks it is stupid. That alone should tell us how important it is. Perhaps Magna Carta AND the US Constitutoin should be taught in police academies.
Imagine if every schoolkid every day was exposed to the Ten Commandments and our Bill of Rights.
We wouldn't be on the cusp of outright tyranny.