History: East German border guards wearing gas mask look over the wall onto Potsdamer Platz in Berlin, Germany, 21 June 1988.[1180x785]

https://i.imgur.com/lrSXIEf.jpg via /r/HistoryPorn https://www.reddit.com/r/HistoryPorn/comments/7mq0wb/east_german_border_guards_wearing_gas_mask_look/?utm_source=ifttt