If there is any lesson to be learned it is that if one guy can paralyze state wide law enforcement for a week, then mass defiance to anti-constitutional laws will be orders of magnitude more difficult for the government to deal with.
While on that subject, you can hear police audio, containing in no uncertain terms, for the cabin he was holed up in to be burned. Audio here. Even before the cabin was ordered to be burned, two innocent people were shot by LAPD during the manhunt. Dorner's actions have brought out into the mainstream just how corrupted much of the "thin blue line" really is.