to be fair nearly all the Weathermen has their start in the SDS earlier in the middle 60s ans some even earlier in the Civil rights and Freedom Rider days
many of the radicals were far older than college aged
but some of the girls were young
“many of the radicals were far older than college aged”
In this story all of them were college age, all were McCains generation the authoress (the raped one), the black guy, Bill Ayers, even his wife Bernardine Dohrn. The little brother was young enough that he may have been born in 1946.