Trump tweets 9/11 photo to Cruz
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Republican presidential front-runner Donald TrumpDonald John TrumpRed states find there’s no free pass on Medicaid changes from Trump Trump meets with Moon in crucial moment for Korea summit The Memo: Trump flirts with constitutional crisis MORE on Saturday brought his Twitter attacks against Texas Sen. Ted CruzRafael (Ted) Edward CruzSenators near deal on sexual harassment policy change Senate GOP urges Trump administration to work closely with Congress on NAFTA Five Republican run-offs to watch in Texas MORE to a new level. 

The billionaire real estate tycoon tweeted an image of the World Trade Center in the aftermath of the Sept. 11, 2001, terrorist attacks. 

"Is this the New York that Ted Cruz is taking about & demeaning?" Trump tweeted.

  

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On Tuesday, Cruz slammed Trump for embodying "New York values."

Trump pushed back at Thursday's Republican debate, calling the statement "very insulting."  

Trump has been targeting Cruz with attacks in the days since the debate, calling him a "hypocrite" for his undisclosed bank loans and taunting him over a lawsuit about his citizenship.

He barraged Cruz with Twitter attacks throughout the day Saturday.