Nebraskans For Peace (NFP) is one of the United States' longest existing non-governmental organizations that was formed during the peace movement.
Need I say more? Is this trying to claim that Nebraskans For Peace is one of the United States' oldest NGOs? Cuz it's not. The American Red Cross is one of the United States' oldest NGOs, and it's MUCH older than NFP, by quite a lot. NFP is relatively young. Is it trying to claim to be one of the oldest "founded during the peace movement"? Well, so what, since all NGOs funded during the peace movement will be about the same age. Bad writing, in any case. And I'm not in the mood to fix it.