For comparison, over a period of 86 years in the US, 4,743 people were lynched (1,297 white, 3,446 black). About 55 per year.
http://law2.umkc.edu/faculty/projects/ftrials/shipp/lynching...
http://law2.umkc.edu/faculty/projects/ftrials/shipp/lynching...
Here in South Africa we do have lots of violent killings, but white farmers aren't killed at a greater than national average level. In fact the highest murder rate is among cape coloureds in the cape flats.