Liberal immaturity is the tendency of liberals to act in an immature and unprofessional manner. Though not all liberals act in such a way, liberals tend to immaturely react to criticism and the expression of opposing views. Liberals often create ridiculous slander and falsely advertise it as "parody", or even "legitimate criticism". Liberals also favor obscenity, indecency, and immorality, and they are also known to engage in stubbornness and behave like children throwing temper tantrums when they refuse to do as they are told and stop engaging in immature behavior.
- Barack Obama called Sarah Palin a pig.
- John Kerry uttered the F-word during a speech he gave during the 2004 Democratic National Convention.
- John Kerry insulted members of the American military by saying that those who don't succeed academically get stuck in Iraq.
- John Edwards has hired foul mouthed bloggers.
- Liberal vandalism of Conservapedia (where the vandals generally show themselves as foul-mouthed immature punks).
- Protesting fiscal responsibility is somehow "racist" according to liberals.
- Samantha Bee used a vulgar sexual epithet to refer to First Daughter Ivanka Trump on her show Full Frontal while attacking her for posting a photo of herself with her infant son Theodore Kushner online, while also suggesting that she try "seducing" her father, President Donald Trump, to get him to change his mind on his policies against illegal immigration.
- Nancy Pelosi was caught on camera ripping up a copy of President Trump's speech during his 2020 State of the Union Address. 
- Amy Schumer's parody of Meghan's Trainor's "All About That Bass" is full of classless, crude and immature jokes. 
- Entitled Millennial woman Seloni Khetarpal was arrested by police in Canton, Ohio and charged with disrupting public services when she refused to stop calling 911 and became belligerent with 911 operators because her parents had cut off making payments on her cell phone and she became incensed when the operators would not take her side in the issue after she demanded that her phone service be restored.
- Savannah Guthrie was rude and unprofessional when interviewing president Trump 
- Governor Andrew Cuomo said about Trump, "If I wasn’t governor of New York, I would have decked him." 
- The Federal Communications Commission
- Michelle Malkin
- Samantha Bee to Ivanka: "Do Something About Your Dad's Immigration Policies, You Feckless ****" at Breitbart.com
- Entitled Millennial Repeatedly Called 911 Because Parents Kicked Her Off Phone Plan at the Western Journal