The era of laissez-faire happiness might be coming to an end. Some prominent economists and psychologists are looking into ways to measure happiness to draw it into the public policy realm. Thirty years from now, reducing unhappiness could become another target of policy, like cutting poverty.
Several passers-by were killed in the ambush.
noun [U] (ALSO laisser-faire)
1 unwillingness to get involved in or influence other people's activities:
The problems began long before he became headteacher, but they worsened with his laissez-faire approach/attitude.
2 If a government is laissez-faire, it does not have many laws and rules which control the buying and selling of goods and services.
I know that the dictionary has "laissez-passer" as meaning free pass, or "let-go"