Is the theory of natural selection connected to racism?
Racism is an attitude or prejudice based on physical differences (usually). It is not restricted to any particular biological group.
The Theory of Natural Selection was neither developed from racist perspectives nor does it provide any evidence to support them.
A person with a racist attitude may use (abuse) different scientific studies to attempt to bolster their particular claims (usually of superiority). The ignorant appropriation of scientific terminology does not improve or legitimize an incorrect and flawed personal perspective.