It takes seconds to suss out offensive tweets, but celebs just aren't getting the message

Updated 12:25 PM ET, Sun January 13, 2019

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(CNN)It only takes a few seconds to search for something on someone's Twitter account. With the right terms and a little bit of intuition, one may even find something that threatens to take down an entire career.

It's happened time and time again. Most recently, to Nick Vallelonga, a producer for "The Green Book," a feel-good story about interracial friends during the era of American segregation. He had to answer for an Islamophobic tweet from 2015 in which he supported President Donald Trump's false claim that Muslims in New York City cheered during the 9/11 attacks.
It happens to stars on the rise and stars at their peak. Late last year, actor Kevin Hart stepped down from hosting the Academy Awards, a gig he once described as a "dream," after tweets from 2009 to 2011 surfaced that contained homophobic language. In the world of sports, athletes at a critical juncture in their career -- an important game, a draft decision -- have been repeatedly waylaid by their own words that could have been dug up by anyone with a Twitter account and a vague inclination.
The question is, how does it keep happening at all? We live in an age of tweeting grandmas and child YouTube stars, of hyper-curated Instagram universes and infinitely expanding digital literacy. A reasonable level of social media awareness is not too much to expect -- for stars or the people that manage them. Why do famous people, whose images are central to their relevancy and livelihoods, keep letting themselves get played for their old bad internet behavior?
Nick Vallelonga had to answer for an Islamophobic tweet from 2015.

Why famous people tweet bad things

The question has some practical aspects and some philosophical ones.
    Of course, the most practical -- and best -- solution would be to not throw problematic things into the public sphere at all. But, philosophically, things don't work that way.
    "Every single one of us has bad thoughts," says Brian Harrington, a personal branding consultant in Los Angeles. He helps people build digital footprints that communicate an authentic image, and that can mean contending with controversy.
    "As cool as someone like Kevin Hart is, there are going to be parts of him or anyone else that someone isn't going to like."
    This disconnect between who someone wants to be to the public, and who someone is, was apparent last July when "Guardians of the Galaxy 3" director James Gunn was swiftly fired after old tweets surfaced that contained crude sexual jokes from 2010.
    James Gunn was fired after old tweets surfaced that contained crude sexual jokes.