Donald Trump Jr., the president's son, mocked Massachusetts Sen. Elizabeth Warren on Twitter on Saturday.

The progressive senator claimed the GOP is "hell-bent on rigging the system for the rich & powerful." In response, the Trump son claimed the Massachusetts senator was displaying a hypocritical attitude.

Ha, you mean like someone who was paid almost $500,000.00 to "teach" one class a semester at Harvard? #DoAsISayNotAsIDo https://t.co/8OpNksJQhl — Donald Trump Jr. (@DonaldJTrumpJr) March 25, 2017



Warren was a favorite target for President Trump on the 2016 campaign trail. Warren campaigned for failed Democratic presidential nominee Hillary Clinton and routinely barbed Trump on the stump.

Warren is up for re-election in 2018.