Acamar III is the homeworld of the Acamarians, whose bloody clan feuds drove the Gatherers into exile as raiders.
Acamar III is home to the Acamarians, a society that had suffered generations of violent feuds between its clans. Those who refused to give up the feuds left the planet and became the Gatherers, roaming bands of raiders. In The Vengeance Factor the Enterprise came to Acamar III after evidence of Acamarian involvement in an attack on a Federation outpost.
Picard persuaded Sovereign Marouk to offer the Gatherers a peaceful return. The talks were nearly derailed when Marouk's assistant Yuta, the last of a slaughtered clan, tried to complete her revenge, but an agreement was reached.