Loved the homage to John Carpenter's 'Halloween!(the masks on the rioters and, of course, the killing and eating of the German Shepard).
This episode was interesting and tense from the beginning to the end. The chaos of the urban riots, the creepiness of the frequent power outages, and the maze in the backyard of a neighbor inhabited by a zombie woman were just amazing sequences.
And now the true natures of some of the main characters are starting to emerge (the pacifist teacher, his disgruntled son, his rational wife, her junkie son, her cynical daughter, the Salvadorian refugee father) as the apocalypse approaches.
The surprising twist of the US military showing up at the end only added icing on the cake for a great episode!
Keep it up AMC!