peanut gallery
noun()
rearmost or uppermost area in the balcony containing the least expensive seats
Synonyms: family circle, second balcony, upper balcony,
peanut gallery
noun()
(figurative) people whose criticisms are regarded as irrelevant or insignificant (resembling uneducated people who throw peanuts on the stage to express displeasure with a performance)
Examples:
He ignored complaints from the peanut gallery.