Melissa Benoist was a real-life superhero this weekend when she joined the thousands of women, men and children who headed to Washington, D.C., on Saturday for the Womens March .

The Supergirl star opened up about the incredible day during an interview with The Huffington Post on Build Series Monday, saying, I dont think Ill ever forget it.

My favorite point was when we reached the White House, and everywhere you turned, whichever street you were looking down, it was just a sea of people. A sea of people with the best energy, she continued. The most positive place you could be. Everyone was supportive, everyone was loving each other. It was pretty amazing.

Benoists protest sign was pretty amazing too, as she used her Supergirl status to send President Donald Trump a message.