-1935 President Franklin D. Roosevelt signed the National Labor Relations Act, which allowed labor to organize for the purpose of collective bargaining.
-1946 The bikini made its debut during an outdoor fashion show at the Molitor Pool in Paris. (trivia - this first French bikini was designed by a man, an automotive engineer not a fashion designer, named Louis Reard; this was what it looked like - DG)
-1948 Britain's National Health Service Act went into effect, providing government-financed medical and dental care.
(Some of us even think these were changes for the better!)