I think you are defining racism so narrowly it only defines people who state "I'm superior to this race" where their actions alone can never be racist unless they say that.
I already replied to the tornado comment but weather can't hold beliefs, it's a non sequitur that doesn't support your argument.
Let's say you have the "non-racist" slave owner. No matter what they personally believe about the equality of individual humans, they create a world where the people who come after will believe fundamentally different things about races.
You can't say, slavery IS wrong, but we are going to do it anyway because we are selfish. The act is racist, because the people who come after you will justify your decisions and cement a racial worldview that you contributed to.
I really hope you read this CNN article in full but here is a quote that I believe directly applies to your argument:
> "When some whites talk about racism, they think it's only personal -- what one person says or does to another. But many minorities and people who study race say racism can be impersonal, calculating, devoid of malice..."
http://www.cnn.com/2014/11/26/us/ferguson-racism-or-racial-b...