cultural barometer

Translations
культурный барометр
Art can often act as a cultural barometer of a society's values.
Искусство часто может служить культурным барометром ценностей общества.
Definitions
A 'cultural barometer' is a metaphorical term used to describe something—such as an event, trend, person, or work of art—that reflects or measures the prevailing attitudes, values, or mood within a particular culture or society at a given time.
Words
barometer

noun
барометр
cultural

adjective
культурный