Hillary Clinton recently spoke to Brandon Stanton, the photographer behind Humans of New York, and recounted an experience where she was taking an admissions test for law school and was heckled by several men.

She described the scene on the Humans of New York Facebook page: “And while we’re waiting for the exam to start, a group of men began to yell things like: ‘You don’t need to be here.’ And ‘There’s plenty else you can do.’ It turned into a real ‘pile on.’ One of them even said: ‘If you take my spot, I’ll get drafted, and I’ll go to Vietnam, and I’ll die.’”

“It was intense,” she continued. “It got very personal. But I couldn’t respond. I couldn’t afford to get distracted because I didn’t want to mess up the test. So I just kept looking down, hoping that the proctor would walk in the room.”

Clinton, who has been the target of much sexist commentary during this election cycle, explained how this scene impacted her future poise: “I know that I can be perceived as aloof or cold or unemotional. But I had to learn as a young woman to control my emotions.”

Check out the full Humans of New York post, below:

Photo: Democratic U.S. presidential candidate Hillary Clinton speaks during her California primary night rally held in the Brooklyn borough of New York, U.S., June 7, 2016. REUTERS/Lucas Jackson