Trump proves Clinton's point about his thin skin with early morning Twitter rampage over DNC

During her Democratic National Convention speech on Thursday, presidential nominee Hillary Clinton criticized her GOP rival, Donald Trump, accusing him of being too thin-skinned to be trusted as commander-in-chief.

Trump is known for his prolific use of Twitter and also for his bombastic responses to critics -- including calling Massachusetts Sen. Elizabeth Warren "Pocahontas" for targeting him on the social media platform. On Thursday night, Clinton said this tendency is dangerous for a president.

"A man you can bait with a tweet is not a man we can trust with nuclear weapons," Clinton said.

The comments seemed to get under Trump's skin on Friday morning.

He added, "The media coverage this morning of the very average Clinton speech and Convention is a joke. @CNN and the little watched @Morning_Joe = SAD!" He then criticized Clinton for saying she believed in science and that climate change was a threat.

Trump also blasted former New York City mayor Michael Bloomberg, who endorsed Clinton and criticized Trump in a DNC speech.

"'Little' Michael Bloomberg, who never had the guts to run for president, knows nothing about me. His last term as Mayor was a disaster!" Trump wrote.

In what seems like an unprecedented move for a presidential contender, Trump went after retired four-star General John Allen, a Marine Corps veteran who spoke on behalf of Clinton, taking the stage with fellow military veterans.