Farrow tweeted the image on Tuesday, writing: "@realDonaldTrump tell your sons that animal cruelty is now a crime."
"What's happened to Woody is so upsetting, so unjust," Previn said. Mia "has taken advantage of the #MeToo movement."
"But he knew and I knew that it was a moral issue," she told THR. "He had to continue, even when that meant putting a lot on the line."
Woody Allen's adopted daughter accused the filmmaker of molesting her in 1992, when she was 7 years old.
The relative lack of coverage of sex abuse allegations against filmmaker Allen is "wrong" and "dangerous," his son Farrow writes.