Unfortunately, state-sponsored racism still exists in this country, as evidenced both by RWC, whose ignorant views are fostered by circular reasoning in that more blacks are in jail per capita, therefore more blacks are criminals. This is not true in itself. The truth is that more poor people go to jail than rich people=more minorities are below poverty level due to unequal education, cultural bias by and against black Americans toward education, = more minorites are caught committing crimes and punished for same. It doesn't mean less whites are committing crimes, merely that their punishments are frequently less severe.
The other form of racism, perpetrated by so-called "reasonable" people like the Question pretends to be, is the Rush Limbaugh-style affable racism where a myth is perpetrated either by "just fooling around" or "I'm reasonable, but my research says that ..." before spouting off propagandist garbage as fact. Because these guys are so reasonable and erudite, their arguments are more insidious and harder to combat than the slogan-shouting skinhead.
As for whether racism exists in minorities: of course cultural bigotry exists between races, that is as old as time and will probably never change. The oldest emotion in human history, whether you believe in creationism or evolution, is hate. That guy is different from us, he is not-us, therefore we will kill that guy.
But cultural bigotry is not racism. Racism by its definition is bigotry against a type or subgroup, PLUS THE POWER OF THE RULING CLASS TO ACTIVELY REPRESS THAT GROUP. As the "majority" class in America, moneyed whites have the power through various means to suppress and repress minorities: through law, police action, education, and welfare, the ones with money and power get to keep it, and the ones without stay without.