History: One of the fist flashmobs in history- In memory of the horses perished during WWI, 1920s [695 x 946]

https://i.redd.it/y7wh105b0xx11.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/9weqyt/one_of_the_fist_flashmobs_in_history_in_memory_of/?utm_source=ifttt