I am just going to link to ThankYouDonald and let the posts speak for themselves.
The account description is:
Thank You, Donald. Bearing witness to the #WhiteLash. Contribute photos/screenshots by tagging them with #SubmitToHate. I wish this account didn’t need to exist.
I wish this account didn’t need to exist, either.
(Note: I am not the person who started that account)