Not in the traditional sense of the word. Say Joe is a white supremacist. He's white and he's poor. He believes that all whites are better than all minorities. However, Joe is also not in power, because other white people are in power, and Joe doesn't like those other white people (though Joe prefers the powerful white people to any minorities). Joe will work with the powerful white people to keep minorities down, but otherwise his goals and believes are different than those of the powerful white people, and he resents them.

Southern prisons are full of people like Joe. Joe has some power in everyday life over minorities, due to the racist society he lives in and supports. But it's a big stretch to say Joe is in power. Cops, judges, and politicians are in power. Joe steals catalytic converters and sells meth.