"The grief comes in waves," she wrote on Instagram, along with a photo of herself with tears running down her face.
"As if someone I loved died," she continued. "I've never felt this brand of sadness before. If you cried all day- you are not alone. We deserve to mourn. Patiently waiting for the sadness to transform into something more useful."
"There is beauty worth fighting for," she wrote in another post. "We will rise up, and we will protect one another, and we will do whatever we can, for as long as we can, because that's what we're here to do."
Ferrera has been an outspoken Hillary Clinton supporter since 2008. After it was confirmed that Donald Trump beat Clinton as the president-elect, stars like Katy Perry, Madonna, Alec Baldwin, and John Legend took to social media to express their surprise and sorrow.