Sure thing.
Bigotry and Racism are both specific forms of what is known in logic as the Compositional Error Fallacy. A Compositional Error Fallacy occurs whenever someone improperly extends a property of an item of a class across other items within the same class, or across the class itself. This can be visualized through an example of marbles inside of a bag. I pick one marble; it is white. I pick another marble; it is white. I pick a third marble, and a fourth, and they are both white as well. If I were to then conclude that all the marbles inside the bag are white, then I would be committing the compositional error fallacy, since I am improperly extending the color 'white' across all the other marbles inside the bag, which might instead be black, red, green, purple, etc...
Bigotry and racism are simply specific forms of this fallacy. Bigotry occurs whenever the above-mentioned fallacy involves 'people' as the 'class' being discussed. Racism occurs whenever the above-mentioned fallacy involves 'people' as the 'class' being discussed AND involves a genetic trait (such as skin color) as the 'property' being discussed.
In the OP, guno improperly extended the property 'white' across the class 'people' regarding the 'church' "bag".
The linked article itself is chocked full of racism. It attempts to paint Trump rally attendees as 'white', 'Christian', and 'blonde haired'. It also makes up a false claim that Jesus said we are all "equal". It speaks of "rhetoric of division" when it ITSELF is the rhetoric of division, as evidenced by the racism throughout the article. Then it doubles down on Trump rally attendees being 'white Christians'. Then, it falsely claims that "send her back!" is a racist/sexist chant. The people who claim that are actually being the racists and sexists, since racist/sexist models must be created in order to accuse someone of those models. Trump did not create those models; his accusers did. His accusers are the actual racists. Then the article adds in more racism by implying that the only Christians who do not support Trump are "Christians of color". Then it goes on to talk about 'white' Christian churches, and 'white' Christian groups, 'white' Christians struggling, 'white' clergy friends, and on and on and on throughout the rest of the article, including implying that only 'white' Christians have a "God problem".
That's what I mean when I ask 'why the racism?'...
