A community organizes for years demanding policy change, gathering signatures, attending meetings, testifying at hearings, building coalitions - and finally a bill is introduced, and it dies in committee, and the process begins again, the effort required to change law so enormous that most changes never happen. A tragedy captures public attention and suddenly legislation that had stalled for years moves quickly through the process, the window of opportunity created by attention that will soon fade, the politics of policy change unpredictable in ways that frustrate systematic advocacy.