Elizabeth Olsen still volunteers at the rape crisis center she visited in preparation for her movie Wind River.
In the thriller, the 28-year-old stars as an FBI agent brought in to help solve the rape and murder of an 18-year-old girl on a Native American reservation in Wyoming alongside a US Fish and Wildlife Service agent, played by Jeremy Renner.
To prepare for the part, she visited a rape crisis center in Santa Monica, California and felt like she wanted to help out, so she completed a training course and now goes there once a week when she's not working.
"It's an amazing facility, for adults and minors... I was like, 'What could I actually do?'" she told Britain's ES magazine. "Going and playing cards with a bunch of really sweet people and just making them feel like a kid when they're going through a traumatic experience - that to me is something I can walk away and be happy with.
"You make connections. If you go at the same time every week you see the same people. I see the same people every week when I'm in town. It's a beautiful community... it's really an incredible, supportive place. I love being a part of it."
During the interview, Elizabeth, the sister of twins Mary-Kate and Ashley, also discussed how the rest of the world must be viewing America following the election of Donald Trump.
However, The Avengers star has found a silver lining in the situation as it has forced people to become more politically active and stand up for causes close to their heart.
"What is cool about what’s happening right now, however, is that while people have always talked about causes that they are interested in, now they are actually actively a part of them," she said.