Raven traced Kurt's ...unusual fingers with her thumb as she considered how she ought to answer. "Not a fight, really. More like a... disagreement. A clash of ideals." She pulled her hand away to run it through her slicked back hair. So far she'd been able to avoid the subject of mutant politics with Kurt, but there was no running from it forever. At some point he would know.
"There was a battle, where the first group of mutants got together and stopped what would have become World War III. But even though we saved their lives, the humans turned against us. Charles believed-- still believes, I suppose-- that mutants can learn to blend in with humanity and eventually be accepted. But Erik, that is to say, Magneto, believed we shouldn't have to change who we are to bow to their fear." Raven watched Kurt's expression carefully to see how he reacted to hearing about this.
"I went with Magneto that day. I... I was sick of hiding. I was sick of pretending I'm not proud of who I am."