The 33-year-old actress blasted Franco, 39, as a hypocrite in her speech in Los Angeles after several women came forward to accuse him of sexual harassment recently.
'I want my pin back, by the way' said Johansson of Franco's 'Time's Up' pin before thousands of protestors.
However, since her inflammatory attack many have called her out after she previously defended director Woody Allen.
Back in 2014 she called child abuse claims against Allen as 'all guesswork' while she has never worked with Franco.
'The Disaster Artist' has denied the claims made against him and is expected to attend the SAG Awards in Los Angeles today.
Since scooping a Golden Globe Awards on January 7, five accusers came forward charging him as a hypocrite.
Sources close to the actor claim that he's been left 'in a really bad place' by the claims being made against him.
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