I'm not sure if that has anything to do with the questions you ask, but if the assumption is that jigaboo would be more widely used in the Southern region of the USA {and I don't know that that's a valid assumption} I'm only lived in the Eastern part of the USA. I have no Southern relatives that I know of, and I have only been "down South" {besides Washington, D.C} two times on business.

In my entire life-including the four years that I was one of 4 Black students who lived on campus at a small liberal arts college,
I haven't been around White people who would call me jigaboo to my face. And in my entire life, I haven't been around any Black people who would call another Black person that name to their face or behind their back.

Then again, I haven't had any White person or Black person or person of another race or ethnicity call me the "n-word" either.

So, is racism is less overt than it previously was? I think so.

Have I have not had personal experience with racism? Yes.

Do our mass media and educational systems do enough to rid the world of racism?

No.