I am assuming you are meaning skin cancer, right? Although I am very aware that radiation can cause a bevy of cancers, let's just, for the sake of observation, look at skin cancer.
If you saw the video that SS recommended with Susan , there is some freaky anomaly that's been growing over the last few decades over South America. They've had many satellite issues as a result which suggest an in pouring of energy. I immediately thought, cancer alert. People would surely be affected.

However, according to the website below, most countries in South America have lower incidences of skin cancer.
[link to www.wrongdiagnosis.com]

Now, this could be attributable to the natural sunscreen that the people of South America have....however, they are as diverse in skin color as black people.....

I, for one, am not afraid of the radiation...I feel compelled to go out on a clear sunny day. (as long as those funny looking clouds aren't out there....)