1910’s-era movie theater etiquette Public Service Announcement (via)
Judging from the large number of early PSA’s directed at people sporting headpieces indoors, it would seem that defiant hat-wearers were the turn of the century equivalent of people who leave their cellphones on at the movies today. 
Other etiquette slides previously posted here.

1910’s-era movie theater etiquette Public Service Announcement (via)

Judging from the large number of early PSA’s directed at people sporting headpieces indoors, it would seem that defiant hat-wearers were the turn of the century equivalent of people who leave their cellphones on at the movies today. 

Other etiquette slides previously posted here.