"We do need truth," Trump as he accused the press corps of not doing enough about Clinton's troubles, at one point labeling reporters, "enemies."
"They've got to start talking about Wikileaks, they've got to start talking about the things that are going on," Trump said to cheers.
"They poison the minds of voters," Trump added about the press.
The crowd also made clear its feelings about U.S. House Speaker Paul Ryan, who Trump has been needling for days, arguing the GOP establishment isn't doing enough to help Trump win.
Before Trump could even take the stage, the crowd was chanting, "Paul Ryan sucks!"
Trump also repeated his claims that the 2016 election is being rigged against him, and also claimed that in 2008, President Obama won the state of North Carolina possibly because of the votes of illegal immigrants.
Trump provided no evidence to back up that claim.
"It could have provided his margin of victory," Trump said in Green Bay.
Trump will make two stops in Colorado on Tuesday, and then head to Las Vegas for the final debate with Hillary Clinton on Wednesday evening.