@anubis2814 that makes for a nice conspiracy theory, but consider the Occam's razor here: maybe they don't support Harris because she's just not a good candidate?
She's not.
The Democratic Party really screwed up nominating somebody that was such a weak candidate. It was obvious from before the nomination that she was not a good person to run for president. She has lost over and over again.
So maybe these papers are refusing to support her not because of anything Trump said, but because she is honestly rubbish, and the party screwed up.