Emma González has become one of a handful of students from Stoneman Douglas High School in Parkland, Florida to emerge as a leader of a revived anti-gun violence movement after a shooter killed 17 of her fellow students.

“If the President wants to come up to me and tell me to my face that it was a terrible tragedy and how it should never have happened,” she said at a speech that thrust her into the national spotlight, “and maintain telling us how nothing is going to be done about it, I’m going to happily ask him how much money he received from the National Rifle Association.”

González is a bisexual activist whose Twitter has become a meeting point for discussion concerning gun control in the United States.

Ironically, when the shooter entered her high school, Gonzalez was in her AP Government and Politics class learning about special interest groups.

“I hate guns,” González said. “All of these people are getting paid to do nothing about guns, and we as a people are doing nothing in response, so that’s our fault. It’s the people’s fault for not doing something.”

Before being thrust into the national spotlight González was known in her high school for her self-expression (creating her own clothes and having a shaved head), but also as the president of the school’s Gay-Straight Alliance.

You may have also seen her going toe-to-toe with a representative from the NRA during CNN’s town hall:

Florida Shooting Survivor Questions NRA Spokesperson Marjory Stoneman Douglas High School student Emma Gonzalez questions National Rifle Association spokesperson Dana Loesch. The Feb. 14 shooting at the Florida school killed 17 people. http://ti.me/2CAUVpk Posted by TIME on Thursday, February 22, 2018

Half-a-million people are expected at the March for Our Lives rally in Washington D.C. on March 24.