President's son retweets Trump supporter who said: 'Events like today are EXACTLY why we took issue with NY elites glorifying' assassination of president

Donald Jr is vocal advocate for his father and had spoken out previously about Kathy Griffin posing with decapitated president 

Row has also mounted over New York Public Theater's production of Julius Caesar which shows Trump lookalike being stabbed to death in senate 

Trump spoke out against that, asking how much taxpayers were out of pocket to pay for the production 

Staging in Cnetral Park going ahead as planned after the attempted mass murder