"He's just capitalizing on resentments that politicians have been fanning for years - a fear and anger that's rooted in our past, but also born out of the enormous upheavals that have taken place in your brief lifetimes".
Trump also said Obama was trying to take credit for this "incredible thing that's happening to our country".
During his hour long speech, Obama said this Congress has championed the unwinding of campaign finance laws to give billionaires outsized influence over our politics; systemically attacked voting rights to make it harder for the young people, the minorities, and the poor to vote.
He said Donald Trump's name for the first time since leaving office. "He is a symptom, not the cause", Obama said. "You can not sit back and wait for a savior", Obama remarked.
American presidents tend not to publicly criticise their successors or campaign against them directly, but Obama has been under pressure to step up to defend his policies and programmes from being dismantled by Trump and to rally Democrats who are without an impressive leader. In the coming week, Obama is likely to campaign in Ohio for Richard Cordray, a Democratic nominee for governor, and Ohio Democrats.
"We are Americans, we're supposed to stand up to bullies".
"If we don't step up, things can get worse", the former president told the audience at the Anaheim Convention Center.
"We were ready for Barack Obama".
That kind of equivocation, Obama argued, isn't one that has its roots in the Republican Party, referring back to one of his favorite presidents and fellow IL son, Abraham Lincoln.
Evacuations underway as Florence strengthens to category 4 hurricane
Forecasters say that the storm will take a west-northwestward motion and will increase its movement over the next several days. The NHC also was tracking two other hurricanes farther out in the Atlantic: Category 1 Isaac and Category 2 Helene.
"And we're sure as heck supposed to stand up to Nazi sympathizers", Obama said, referring to Trump's comment that there was blame on "both sides" ata white nationalist rally previous year in Charlottesville, Va.
Obama says during a speech Friday in IL that the Republican-controlled Congress has championed the unwinding of campaign finance laws, made it harder for minorities to vote and voted multiple times to take health care away from ordinary Americans.
The former president did however appear to endorse the idea of universal, single-payer healthcare, a position that he opposed while in office.
He argued that the economy would have crashed if Hillary Clinton had won the election. "We've seen basic norms and principles that have served us well for decades increasingly violated", Obama said.
Obama's re-emergence comes as both parties are girding for a November election widely seen as a referendum on Trump.
"If you're a patriot and you like the course America is on, just ignore them, get behind this president, and vote", she told her viewers.
The former president jumped into the campaign fray Saturday in Anaheim, Calif., a former Republican stronghold, to remind voters to cast ballots for Democratic congressional candidates in the upcoming midterm elections, ABC News reported. "I found he's very good.for sleeping". "Doubling down on that strategy won't work in 2018 either", RNC spokesman Michael Ahrens said in a statement.
"The biggest threat to our democracy ... is not one individual, it is not one big super PAC billionaires", he said. "Then something powerful happens", he said. He will appear at a campaign event in Southern California before heading to OH next week and to IL and Pennsylvania later in the month. In the other Orange County race, Gil Cisneros, a Democratic philanthropist and Navy veteran, is vying for an open seat created by retiring Republican Ed Royce.