Conservative think-tanks including the Heritage Foundation were in attendance along with social media personalities accused of pushing conspiracy theories and misleading information on the internet.
Mr Trump used the summit to take shots at CNN, or as he referred to the broadcaster, “fake news”, alleged bias among technology companies, and the suppression of free speech as he addressed the room. At one point he pointed out that a number of attendees had already been banned from Twitter, to laughter from guests. “I mean, in all fairness some of you I can almost understand it,” he said. “Some of you guys are out there.”
Cardboard cut-outs of his favourite tweets were used to decorate the room.
Just hours earlier Mr Trump berated Twitter on Twitter, along with Facebook, YouTube and Instagram for “tremendous dishonesty, bias, discrimination and suppression practiced by certain companies”.