The actress and activist Jane Fonda says she "worries" about climate activist Greta Thunberg, Eurasia Diary reports citing BBC.
"She understands that if she's attacked it's because she's making a difference and that is scares people," says Fonda.
The 81 year-old has vowed to protest every Friday until January to demand for action to be taken to address climate change.
Thunberg, 16, found fame after her youth climate strike protests spread to schools around the world.
"They handcuff you with plastic things, not the old good metal ones. They hurt more," Fonda says of her most recent arrest.
But she says: "I don't want to go to prison.
"I don't think that Jane Fonda the martyr is exactly what the movement needs right now."
"The police are figuring out what to do. I was told if I keep getting arrested every week I may be put in the slammer. I may not get arrested every week because I have to start filming Grace and Frankie (her series for Netflix)."
Her latest action, she says, was inspired by the student protests led by Thunberg.
They are "more politically savvy than we ever were at that age. They're much more sensitive of diversity. This can't be a white, elite climate action.