Around this time of year in Yerevan, Armenia’s capital city, it’s difficult to travel even half a block without being reminded of the horrific events of 1915. On every street, a billboard or bumper sticker with a melancholic but moving message casts a long, dark shadow over the city.

One sign reads, “1915: 1.5 million Armenians were massacred. 2015: 10 million Armenians live.” Some images are more macabre: one uses a rifle, a noose, a sickle, and a machete to make “1915,” lest Armenians forget which weapons were used to butcher their grandparents.

Another draws parallels between the 1915 and 1939 genocides, placing a faceless figure sporting a red fez and Turkish mustache next to another with a mop of patchy black hair and a Hitler mustache. The caption reads, “By condemning the previous, we could have prevented the following.”