This interactive map and chart locate more than 200 strikes. Below are two different visualizations. Filter by year, state, type of event.

Research: Nick Bragg, Alison Cheung, Morgan Cottle, Michael Handley, Oliver Janders, and Austin Upton as an assignment for HSTAA 353, Spring 2014. Becca Flores edited and helped with the maps. Read year by year summaries of key events and see the full database here.