"The triggering has been insane," McGowan said to the crowd. "The monster's face has been everywhere, my nightmare. But, I know I’m not alone.”
“Join me as we amplify our voices...it’s time to clean house. P*****s grab back! Women grab back! We speak! We yell! We march! We are here! We will not go away!” she concluded. "We are pure and we are strong and we will fight. My name is Rose McGowan, and I am brave, and I am you."
Last month, McGowan spoke to ET about her latest film, The Sound, and the advice she'd give her younger self about being in the industry.
"Watch out! Watch out for the predator," McGowan said. "Watch out for those that would lie to you, watch out for those that would hurt you."
Hear more in the video below.