I do not think that someday a master race of human being will one day rule the planet because right now there is no such thing. We are all equal. It does not matter what color, or what religion, or even what gender. The hair, their style, it is what makes us all amazing.
There will be no master race of humans. The reason for this is because technology keeps growing exponentially, and the price of technology keeps on dropping. In the future, everyone will have access to all of the latest and best technologies and there will be more equality all around and everywhere.
Diversity in genetics and DNA are the keys to survival. Charles Darwin knew this when he observed different beaks on similar bird species. If humans don't diversify their genetic line, we will perish as well. The more genetically diverse we become, the better chance we have for survival far into the future. A "master race" of humans is ill advised.
The idea of the master race has been tossed around by every supremacist movement to date. They all claim to be the only viable future of humanity. Claiming the others will die out for various reasons. With all this fighting between races, a master race cannot be crowned. With the current level of technology and warfare being complete mutually assured destruction, the more likely master race will be a bird/roach/squid hybrid. Humans will eventually kill themselves off.
No, I do not think that a "master race" of human beings will one day rule the planet. Adolph Hitler thought that, and look how well attempting to put that theory to test worked out for him. The "master race" thing is a common fantasy for white supremacists, who usually tend to be uneducated and insecure.