Read the excerpt from hughes’s "the negro artist and the racial mountain." and now she turns up her nose at jazz and all its manifestations—likewise almost everything else distinctly racial. in this context, what is the meaning of “manifestations”?

In the context of the excerpt from Hughes’s "The Negro Artist and the Racial Mountain.": 
And now she turns up her nose at jazz and all its manifestations—likewise almost everything else distinctly racial. 
The connotation of the word “manifestations” is its presentation of negativity or warnings. 

  C - Displays

There flaw is their dicks