Toggle Community Districts Layer

[allthesignals]

This doesn't need to be designed yet, just build a way to toggle this layer on a map.

Data source https://storymaps.arcgis.com/stories/ab8807d5e1e64eec9546785041f563ea

• [x] Neighborhoods
• [x] Community Districts
• [x] Council Districts
• [ ] Subways

[allthesignals]