Are you claiming that Muslims weren't cheering in New Jersey?
I can't know for sure. John J. Farmer Jr. the New Jersey attorney general said “We followed up on that report instantly because of its implications,” he added. “The word came back quickly from Jersey City, later from Paterson. False report. Never happened.”
http://www.nytimes.com/2015/11/25/nyregion/a-definitive-debunking-of-donald-trumps-9-11-claims.htmlI am claiming that the lying liar Trump lied when he said “Hey, I watched when the World Trade Center came tumbling down. And I watched in Jersey City, N.J., where thousands and thousands of people were cheering as that building was coming down. Thousands of people were cheering.” and later "It did happen. I saw it. It was on television. I saw it"
It wasn't on TV. By now he knows it wasn't on TV. He is wrong, and knows it, but unwilling to admit it. He is willing to double down on his lie to keep himself in the headlines.
Trump reminds me of Obama, Obama's failure to admit a mistake, and the mess that is now Syria.