I am an immigrant. My first name is Geoffrey. Although British people are familiar with the name, many others are not. At my grade school graduation ceremony I was introduced by a native born Canadian as "Gooffrey". 

The situation has not been improved by the influx of Asian immigrants, few of whom can pronounce my name   on sight and usually don't even try. I don't complain. My school chums from Poland and other points in Eastern Europe had it much worse.  My Canadian-Italian dentist gave up the battle long ago and refers to himself as "Dr. Tony".

Our current society seems determined to root out the "racist" behind every tree so it is understandable that Dr. Ogenyumi is a little sensitive. I know a Chinese lady who is perpetually incensed at the Canadian "racists" who always honk at her when she is driving. However her tendency to cross three lanes of traffic without signalling might be a factor.