‘MY Brother Is an Only Child” is a politically charged family drama set in Italy in the 1960s and 1970s – think “The Best of Youth” (director Daniele Luchetti collaborated with that epic film’s writers) at a more butt-friendly running time.

The focus is on Accio (Elio Germano), who rebels against his older brother Manrico (Riccardo Scamarcio), a Communist leader in their small Italian town, by enlisting with the local fascists. Accio also loves his brother’s girlfriend (Diane Fleri).

Manrico eventually becomes disillusioned with politics, but Accio drifts over to the left with tragic results in this intelligent, well-acted movie.

In Italian with English subtitles. Running time: 100 minutes. Not rated (violence, sexuality). At the Lincoln Plaza, Broadway and 62nd Street.