Serious discussions on the perpetuated correlation between race and class in Mexico have dominated the country’s collective consciousness over the last few years. Cinema has actively participated in such reckoning, but never before as boldly as in Michel Franco’s “New Order (Nuevo Orden).” Bound to be contentious at home for its brutal depiction of a not-so-implausible and not-so-distant dystopia, the auteur’s latest shocks with blistering purpose.