Books: Logan's Run

In 1967 the youth are taking over the world. In Logan's Run, the youth are ruling the world to dire consequences. George Clayton Johnson and William F. Nolan unleash a dystopian tale of youthful re-connection with the old world.
"In Logan’s Run, the message is that you can’t run a civilization with middle-aged and older people eliminated. The society collapses on itself."
"The seeds of the Little War were planted in a restless summer during the mid-1960s, with sit-ins and student demonstrations as youth tested its strength. By the early 1970s over 75 percent of the people living on Earth were under 21 years of age. The population continued to climb—and with it the youth percentage.
In the 1980s the figure was 79.7 percent.
In the 1990s, 82.4 percent.
In the year 2000—critical mass."