The Causeway Collective started as a neighborhood watch in Milwaukee's Kinnickinnic corridor and became something more out of pure necessity. When climate refugees began flooding into the Great Lakes zone in the 2070s, Milwaukee's lower wards absorbed tens of thousands of displaced people with zero institutional support. The corporate governance structure had no incentive to help people who couldn't pay taxes or buy products. So the residents — a mix of long-term locals and earlier waves of refugees — organized their own defense, their own food distribution, their own dispute resolution. The Causeway Collective is what that organization became.

They're about 180 strong, which makes them one of the larger street-level groups, but their numbers are misleading. Only about forty are active fighters. The rest are medics, logistics coordinators, food growers, and community organizers who make the neighborhood function. The Collective runs three community kitchens, maintains a water purification system cobbled together from salvaged parts, and operates a rotating patrol that keeps the worst predators out of their blocks. They're not a gang in the traditional sense — they don't sell drugs, don't run protection rackets, and don't engage in organized crime. They're a militia that formed because the alternative was letting their neighbors starve or be preyed upon.

The complication is funding. Running a parallel social infrastructure costs money that idealism doesn't generate. The Collective funds itself through a combination of community contributions, barter arrangements, and — increasingly — contract work that blurs the line between community defense and mercenary activity. Collective fighters hire out as security for convoys, guard duty for businesses in adjacent neighborhoods, and occasionally as muscle for operations they'd rather not discuss at community meetings.