The zombie reviewers have seen the Peele future and it works. For them. Here is a politically impeccable allegory, sauced with slams, thumps, knives and screams, about the rising-up of — take your interpretative pick — the homeless, the forgotten, the poor, the underprivileged, the dead, or the legatees of slavery. Maybe even the remorseful guilty. The title, Us, you’ve already guessed, is US. The crypto-undead rise from those tens of thousands of tunnels under the United States (statistic courtesy of an opening caption); then a single group will stand outside your house at midnight, in serried row, scary and impassive.