The Democrat Party and it's way of dividing people up into specific groups, by creating victims, is directly responsible for people like Cortez. The party couldn't survive without them because they have become the voter base. Whereas the Democrat voter base was once the working class White man, they tossed him aside in favor of minorities, women, queers, perverts, weirdos, and anyone else who viewed themselves as being "different."
She might not take over the party, but without her and her kind, the Democrats can't survive.
