The fear that Africa and India are going to overtake Europe and the US on the world stage by breeding is a common thought in some right wing conspiracy circles, and it gives them a reason to feel superior. Like the movie Idiocracy with racism.
Way to gloss over the argument altogether. The issue isn't racism, it's that our own political leaders are allowing mass import and export of labor, to the very areas we consider the 3rd world. People scream about an increase in the minimum wage, but then call everyone else a racist (much like you are doing) because they don't think 3rd world labor is beneficial to the country as a whole.
Let's look at what offshoring of manufacturing has brought us, at it's most benign. Ever washed anything made of dishwasher-safe material in a dishwasher? Yeah, that now-present rust on your brand new item tells you that quality has been gone for a very, very long time. All those manufacturing dollars being earned overseas are being spent overseas, which is causing 3rd world > 1st world and vice versa.
People are upset about this because they did nothing wrong. They didn't ask for too much. They didn't strike, and fuck off at work all the time. They busted their asses, and their own government sold out their future with shady trade deals.
But hey, racism right?