In an apparent attempt at intimidation, an anonymous person or group left a paper target riddled with bullet holes outside the League of Women Voters of Seattle-King County office over the July 4th weekend following the nonprofit’s endorsement of gun control legislation.

Last week the LWVS-KC posted a Facebook picture of the shooting target left outside their 18th and Madison office. Recently, the local chapter of the national nonpartisan group had taken a position in support of Initiative 594, a measure that would require universal background checks for all gun purchases in the state.

Ellen Barton, president of the LWVS-KC, said in at statement that the group has a long history of facing intimidation tactics and would not back down from their position.

“This apparent attempt to intimidate us will not dissuade us from our work. The League of Women Voters will continue to be a forum for dialogue, research and education on gun laws and gun violence, and we look forward to reasonable, robust dialogue in the months ahead,” Barton said.

The paper target did not include a written message or specifically name the LWVS-KC, but the organization seemed confident the target was left for them. The office building is home to a handful of other nonprofits, including Powerful Voices (a girls advocacy group) and the Deaf Blind Service Center.

The LWVS-KC has long been engaged in anti-gun violence issues and has argued that I-594 would help keep guns out of the hands of felons and those convicted of domestic abuse. The measure will head to the ballot this November.