Known for her "Harry Potter" role, Emma Watson delivered a speech at the United Nations headquarters on Sept. 20, Saturday as part of the launching of the #HeForShe gender equality campaign, E! Online reported.

Aiming to "mobilize men against gender inequalities," the event was attended by Oscar winner Forest Whitaker and "24" actor Kiefer Sutherland and hosted by Wolf Blitzer.

In July, Watson was appointed as a U.N. Goodwill Ambassador joining Brad Pitt's wife Angelina Jolie and "This Is How We Do" singer Katy Perry.

"Today, we are launching a campaign called HeForShe. I am reaching out to you before we need your help. We want to end gender inequality and to do this, we need everyone involved. This is the first campaign of its kind at the UN," Watson started her speech on gender inequality.

Watson's speech was so powerful that U.N. Secretary-General Ban Ki-Moon commended her.

"She's been using her magic wand in her movie. I hope she will use (her) magic (as she does) want to stop violence against women," Ban said to Watson, which drew laughs from the audience. "Again, thank you very much for shining your spotlight on this life-saving work."

In her speech, Watson said the more she has spoken about feminism, the more she has realized that "fighting for women's rights has too often become synonymous with man-hating. If there is one thing I know for certain, it is that this has to stop."

"Men, I would like to take this opportunity to extend your formal invitation. Gender equality is your issue too. Because to date, I've seen my father's role as a parent being valued les by society despite my needing his presence, as a child, as much as my mother's," Watson said.

Watson's "Noah" co-actor Douglas Booth took to Facebook to show his support for the campaign.

"I am a passionate supporter of gender equality. Emma Watson He For She UN Women ‪#‎HeForShe," wrote Booth, who recently joined the cast of "Pride And Prejudice And Zombies," according to Deadline.

The 22-year-old actor will also star in the 2015 film "Jupiter Ascending" opposite Mila Kunis and Channing Tatum, which is his second big-budget Hollywood film after "Noah," according to The Telegraph.