http://www.snopes.com/fact-check/trump-campaign-actors-announcement/
Did Trump Campaign Offer Actors $50 to Cheer Him at Prez Announcement?
The Trump campaign denied knowing a contractor hired a casting agency for the candidate's 2015 campaign-announcement rally.
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"The Trump campaign paid a contractor who then hired a subcontractor, Extra Mile Casting, to provide services at the 16 June 2015 rally where Donald Trump announced he would run for U.S. president."
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"The Trump campaign denied knowing about or approving the hiring of actors to fill the crowd at his 2015 announcement rally." [I.e., they LIED to the press and the people about knowing there were paid actorss.]
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[And to make matters worse ...] "The story didn't get much traction at the time, likely because, as the Washington Post explained, Trump quickly upended the news cycle with a speech that day in which he made inflammatory remarks about Mexican immigrants. But one year after Trump's announcement, the story resurfaced when the Federal Election Commission (FEC) released a report detailing its findings on a complaint over allegations the Trump campaign violated election law with the alleged hiring of actors. ... *****The FEC, citing the "modest amount" of money at play, declined to prosecute the Trump campaign on accusations of $$$campaign-finance violations.$$$ ***** ..."