Well the "race" card isn't really an argument. There is only one race the human race, unless you are inplying that there were multiple Adams and Eves, which is an error. The skin colors are only effects of the eviroment on people's genes. This is also why evolution and creationism are false. Intellgent Design, which says Gd created everything and allows His creatures to adapt to their environment, not one speices to a different one like evolution but like a small change like a rabbits fur from brown to white. The rabbit is a similar example to some men have darker skin than others.
The race card is an attempt to divide everyone so that God's people cannot be truly one by saying that there are many races when there is clearly only one, the human. You can see how the idea of many races has affected people such as KKK or Black Panthers and many other groups.