Stop Handgun Violence, a group based in Newton, recently updated its billboard with 20 handprints representing each child victim at Sandy Hook Elementary in Newtown.

Take a look at the organization’s previous billboard designs.

In a state known for liberal politics, perhaps the most iconic statement is the 252-foot billboard by Lansdowne Street overlooking the Mass. Pike.

Since 1995, activist John Rosenthal has decorated the edifice with a series of direct, bold advertisements for gun control.

Pictured: A satirical gun show advertisement from 2008.

From 2006.

From 2005.

From 2007.

From 2004.

From 2002.

From 2003.

From 2000.

From 2001.

From 1997.