"It's not for sale".
"Appealing to tribe, appealing to fear, pitting one group against another, telling people that order and security would be restored if it weren't for those who don't look like us, or don't sound like us, or don't pray like we do - that is an old playbook, it's old as time", Obama said.
Speaking to a largely young audience at the University of IL at Urbana-Champaign, Obama urged them to vote if they wanted to make a difference - "In two months we have the chance, not the certainty but the chance, to restore some semblance of sanity to our politics".
"Because in the end, the threat to our democracy doesn't just come from Donald Trump or the current batch of Republicans in congress or the Koch brothers and their lobbyists or too much compromise from Democrats or Russian hacking", Obama said.
Obama continued, "And you happen to be coming of age during one of those moments". "In two months we have a chance to restore some sanity to our politics".
Obama, who has frustrated some Democrats by keeping a relatively low profile since leaving office in January 2017, said Republicans seemed unwilling to safeguard democracy or offer a check on Trump's policies or worst instincts.
"It's apathy", he said.
Obama argued that, "We are supposed to stand up to discrimination and we are sure as heck to stand up clearly and unequivocally to Nazi sympathizers".More news: How To Watch The 2018 Apple iPhone Event
During President Donald Trump's remarks at a rally in North Dakota, which he gave on the heels of a fiery speech former President Barack Obama delivered from Illinois, Trump just couldn't get his predecessor out of his head, even when talking up his own accomplishments.
"If what you are doing requires no sacrifice at all, then you can do more", Obama told the crowd at a sweeping multi-million-dollar Beverly Hills home.
Launching an unprecedented attack on Trump and his policies, Obama said: "It did not start with Donald Trump". "He is a symptom, not the cause".
With the adulation lavished on Obama's speech in IL on Friday, where he repeatedly took shots at Trump, saying Trump's Twitter feed is nothing more than an "electronic versions of bread and circuses", insiders worry Obama's return could throw Trump off his game.
"I'm sorry, I watched it, but I fell asleep", he said.
Obama is also planning campaign trips to Pennsylvania in September, an Obama official said, as well as a NY fundraiser for the National Democratic Redistricting Committee, an organization led by former Attorney General Eric Holder, Obama's longtime friend.
Meanwhile, Michelle Obama is also stepping up her political involvement ahead of the November midterm election. "I found he's very good, very good for sleeping". "I don't mean to pretend I am channelling Abraham Lincoln now, but that's not what he had in mind, I think, when he helped form the Republican Party".
Noting Trump's efforts to improve relations with Russian President Vladimir Putin while US intelligence has accused Russia of interfering in the 2016 presidential election, Obama asked, "What happened to the Republican Party?" Each of the seven candidates that Obama campaigned for on Saturday fit that description. She is urging Americans to participate in a week of action, september 22 through 29, to get people registered to vote.