If we allow people who we consider morally reprehensible to practice their business without question and profit off of us, perhaps there is something flawed with the business-as-usual approach.* It is only when you take a stand against these business-as-usual mindsets that pervade our culture do things change. We can't always expect perfection by people speaking out, but if we yell and scream at people who are angry and browbeat them into complacence, the problems (Rice's awful track record) are deemed acceptable by society and are likely to repeat themselves.

*By business-as-usual, I'm referring to your statement -- that someone can freely practice business no matter what acts they've committed, or wrongs they've perpetrated on humanity.