Woody Allen's Son -- Diane Keaton Forgot to Say ... My Dad's a Child Molestor

9:45 AM PT -- Mia Farrow -- who was silent last night about the Woody tribute -- just posted this message, "A woman has publicly detailed Woody Allen's molestation of her at age 7. GoldenGlobe tribute showed contempt for her & all abuse survivors."

Woody Allen's biological son thinks Diane Keaton's fawning acceptance of the Cecil B. DeMille Lifetime Achievement Award on Woody's behalf lacked one material fact -- that he allegedly fondled his 7-year-old adopted daughter.

Ronan Farrow -- who's mother Mia Farrow split from Woody after she learned he was having an affair with her adopted daughter Soon-Yi -- tweeted this after Keaton's speech at the Golden Globes:

"Missed the Woody Allen tribute -- did they put the part where a woman publicly confirmed he molested her at age 7 before or after Annie Hall?"

Allen's adopted daughter Dylan claimed when she was 7 Allen touched her inappropriately.

Allen through his lawyer -- has previously denied doing anything inappropriate with Dylan.