According to FOX News:

"I'm a forgotten man!  I don't want those people coming here
from shithole countries like Haiti and Africa!!"

   Breaking FAKE FOX News:  According to Jesse at FOX News Trump used the word Shithole to describe his racist feelings towards blacks because:

   "That's what the 'forgotten men' say in a bar!"  Of course, the code word 'forgotten man', means RACIST CREEP!