Despite the ongoing rise in mass shooting numbers, America still lacks commonsense gun laws. This is an issue hard to touch inside Congress, mainly because each state has its own laws.

Because the U.S. government was not acting on the subject, we directly attacked a trait Americans are most known for: their pride for their land. Change the Ref created the Shamecards, a postcard collection designed to demand gun law reform from Congress. Subverting the traditional greeting cards, which depict each city’s landmarks, ours show what cities are becoming known for: mass shootings.

With no budget, we gathered artists across the world to illustrate more than 50 postcards, at least one for each state, making this a national campaign, and we made them available at shamecards.org. With a few clicks, they were sent directly to lawmakers’ mailboxes. Within seven days, thousands of postcards were sent.