It's not the segregationism, it's the motivation. If he was segregating the boys from the girls, he'd be chauvinistic. If he was segregating the wealthy from the poor, he'd be classist. If he were segregating the religious from the atheist, he'd be ideological. What he wants to do is segregate the Blacks from the Whites, therefore he is racist. You're confusing racism with hatred; they are not the same thing.