A protestor interrupted former President Obama's campaign speech on Friday, prompting him to ask why Republicans are angry all the time.

"Why is it that the folks who won the last election are so mad all the time?” Obama joked, referencing President TrumpDonald John TrumpBroward County official Brenda Snipes submits resignation after criticism Retired lieutenant general tears into Trump over attacks against Navy SEAL: 'Disgusting' Senate barrels toward showdown over Trump's court picks MORE's election in 2016. 

“I mean, like, when I won the presidency, at least my side felt pretty good. It tells you something interesting, that even the folks in charge are still mad, because they’re getting ginned up to be mad."

Anger in the electorate has been a running theme throughout politics, with politicians interrupted at dinners by liberal protestors and both sides spouting anger on social media.

In the last two weeks, fear about anger turning into violence has escalated after a man killed 11 people at a synagogue in Pittsburgh. The suspect had expressed anti-Semitic sentiment online and had also criticized the U.S. acceptance of refugees. 

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Another man has been charged with crimes related to the delivery of mail bombs to prominent Democrats who have spoken out against Trump.

Obama's comments came as he campaigned for figures such as Florida Democratic gubernatorial candidate Andrew Gillum and Sen. Bill NelsonClarence (Bill) William NelsonSenate barrels toward showdown over Trump's court picks Why Democratic policies outperform Democratic politicians in rural America Nelson concedes in bitterly-fought Florida Senate race MORE (D-Fla.).

Obama said that the reason why he came to Florida was because next Tuesday’s midterm elections may be the “most important election of our lifetimes.”

“Politicians will always say that, but this time it’s actually true,” the former two-term president said. “The stakes really are that high.”

His visit came as he tours the nation in an effort to whip up support for Democratic candidates ahead of Tuesday's midterms. He's made stops in states such as Nevada, Pennsylvania and Wisconsin, among others.