Trump tweets 9/11 photo to Cruz
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Republican presidential front-runner Donald TrumpDonald John TrumpAssange meets U.S. congressman, vows to prove Russia did not leak him documents A history lesson on the Confederacy for President Trump GOP senator: Trump hasn't 'changed much' since campaign MORE on Saturday brought his Twitter attacks against Texas Sen. Ted CruzTed CruzThe media couldn't be more blatant in distorting Trump's words on Charlottesville Curtis wins GOP primary for House seat vacated by Jason Chaffetz Kimmel: Let’s make Trump a king so he has no power 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.