'You ran out of a book signing!' Donald Trump Jr torn to shreds for questioning Vindman's heroism

Donald Trump Jr. questioned the military service of Lt. Col. Alexander Vindman, and was sprayed with venom.

The president's eldest son posted a link to a Federalist article suggesting Vindman is not a dedicated military officer and public servant, a line of questioning which Rep. Jim Jordan (R-OH) also pursued during an impeachment hearing.

"Let’s Stop Pretending Every Impeachment Witness Is A Selfless Hero," Trump Jr. tweeted, quoting the piece's headline.

His suggestion infuriated other social media users.