If this offends you, it is not intended to. But I think you may have "racism" confused with "stereotyping."
I've posted this before, but racism is when you hate an entire race of people no matter what.
I'm not the least bit offended. I figure anything I post on a message board is subject to challenge, and if I don't think I can defend it, I jolly well better not post it.
I agree that 'hating an entire race of people no matter what' is one definition of racism. But I don't think 'hate' is always a component. I also think it is racism when any racist/ethnic group is considered inferior or less capable or less able or more prone to do something. Some of the most racist people in the country are those who presume that a certain group has to have '******'s' help or government help or some advocacy group's help because they are otherwise incapable of solving their problems.
The term 'wetback', however, is not in itself racist any more than Mexican National or "illegal" or 'transient worker' is racist. It is not any more racist than designating a certain group as Irish immigrants or Italian Mafia or Chinese cooks. People are what they are and it isn't racist to observe what they are. "Wetback", like many other words, has become a perjorative term in many/most circles, but when it is used simply to describe a certain group of people and has no other connotation than that, it is not racist.
To say that President Obama wants to help lazy black people is in itself not a racist statement if it is true or believed to be true. It would be racist to assume that the President would want that
because he was black or to assume that all black people are lazy.
Stereotyping I think is something entirely different any of this.
At least that's the way I look at it.