▲He called players who took a knee, "Weak and out of control!" Colin Kaepernick was a particular target of Trump's, and the former President tweeted "YOU'RE FIRED," and "Find something else to do!" in regard to Kaepernick's protest of the anthem.

▲Trump tweeted that the world-famous rapper had a "failing career." To be fair, this was after Snoop Dogg had shot a toy gun at a Trump-like figure in his music video.

▲Immediately following the G7 summit, in 2018, Trump tweeted that the Prime Minister of Canada "acted so meek and mild," adding that he was, "Very dishonest & weak."

▲The former President was not a fan of the late Supreme Court Justice Ruth Bader Ginsburg, whom he called "an incompetent judge," and tweeted, "Her mind is shot - resign!"

▲The most popular word Trump used to describe the publication was "failure," but other popular terms included: "Fake News," "phony and non-existent 'sources,'" "Not nice," and "the enemy of the American People!"

▲Apart from consistently claiming Obama "did NOTHING" about North Korea or Russia, Trump loved to call the former president "A disaster," and "the worst president in U.S. history!"

▲An unsurprising name on this list, Trump has called Hillary Clinton "crooked" countless times and in numerous variations, adding that she is "unfit to serve," "loves to lie," is "too weak to lead," and "incompetent."

▲Trump claimed in a tweet that Amazon "[uses] our Postal System as their Delivery Boy." He also targeted Amazon fans when he wrote, "Only fools, or worse, are saying that our money losing Post Office makes money with Amazon."

▲Griffin is a comedian and, like with most comedians, Trump is not a fan. He tweeted that she "should be ashamed of herself."

▲You'll find that Trump is generally not a fan of comedians and television hosts, especially Samantha Bee, who he claimed has both a "low ratings show" and "no talent."

▲Trump called the entire region "a 'hell hole'" and "a mess."

▲The former President was unimpressed with one of the nation's favorite sports leagues, tweeting that they are "Boring games," with "Too much talk, not enough action."

▲In a more perplexing case, Trump took issue with the prolific actor. He wrote, "Don't like @SamuelLJackson's golf swing. Not athletic," and complained that the actor "does too many TV commercials – boring."

▲Trump's favorite word to call this Fox News anchor was "crazy," or, more specifically, "Crazy Megyn." He's called her "the most overrated person on tv."

▲Late-night shows are notorious for picking on Trump's gaffes, but he thinks they have "very unfunny & repetitive material." He tweeted that Seth Meyers gave a "weak performance" at the White House Correspondents' Dinner.

▲The whole department store somehow got on Trump's bad side and he tweeted, "Macy's stores suck and they are bad for U.S.A." and advised his followers, "Don't shop there for Christmas!"

▲Trump was upset that Hillary Clinton recruited the former Miss Universe for her campaign, claiming that Machado is "disgusting," "a con," and "my worst Miss U."

▲Trump said of the comedian and host of 'Last Week Tonight' that he has a "very boring and low rated show" and that being on his show would be a "Waste of time & energy!"

▲This all-female talk show is as good as dead to Trump, who tweeted, "The ratings for The View are really low. Nicole Wallace and Molly Sims are a disaster. Get new cast or just put it to sleep. Dead T.V."

▲When Germany's chancellor was named Time's Person of the Year, Trump tweeted, "I told you @TIME Magazine would never pick me as person of the year despite being the big favorite They picked person who is ruining Germany."

▲Trump called the hit show "the worst of NBC," claiming that the "cast is terrible, always a complete hit job. Really bad television!" He also tweeted that it's "unwatchable! Totally biased, not funny and the Baldwin impersonation just can't get any worse."

▲Trump was not pleased with Wolf's stand-up at the White House Correspondents' Dinner in April 2018. He said the event "was a failure last year, but this year was an embarrassment to everyone associated with it. The filthy 'comedian' totally bombed."

▲Trump was not impressed by the 2016 Super Bowl, tweeting that it was "very boring - not nearly as exciting as politics."

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Young sued Trump for using his music as part of his campaign and rallies. Trump tweeted a picture of himself and Young shaking hands, and in the same tweet called the folk-rock singer a "total hypocrite."

Source: (The New York Times)

▲Trump tweeted, "Just watched a very insecure Oprah Winfrey, who at one point I knew very well, interview a panel of people on 60 Minutes. The questions were biased and slanted, the facts incorrect. Hope Oprah runs so she can be exposed and defeated just like all of the others!"

▲Schwarzenegger left hosting duties after the eighth and final installment of 'The Celebrity Apprentice' (newly titled 'The New Celebrity Apprentice') and Trump tweeted that the star "isn't voluntarily leaving the Apprentice, he was fired by his bad (pathetic) ratings."

▲He added that the staff consisted of "very dishonest people who don't 'get' me, and never did!"

▲Trump claimed Trudeau delivered "false statements at his news conference" and later called him "so indignant" for bringing up the past relationship between the two countries.

▲He's called the media a "corrupt" and "totally unhinged" system with "Fools" and "Truly bad people." He also complained about how it was "distorted in its political coverage of your favorite President (me)."

▲Trump also liked his insults to be straight to the point, as you can tell from his tweet about Obama that claimed, "he is just so bad!"

▲He also wrote, "I refuse to call Megyn Kelly a bimbo, because that would not be politically correct. Instead I will only call her a lightweight reporter!"

▲To really emphasize his point, he tweeted, "Schwarzenegger did a really bad job as Governor of California and even worse on the Apprentice...but at least he tried hard!"

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One of his most famous Twitter insults was targeted at iconic actress Meryl Streep, who he said is "one of the most over-rated actresses in Hollywood."

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McCain is a TV host and the daughter of Senator John McCain. Trump has called her "terrible [...] Angry and obnoxious," claiming that "she will never make it on T.V."

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As the President of the United States, Trump was in a position of immense power during a time of mass social media use, connecting his thoughts with the world in a matter of moments. More than any president in US history, he made use of that instant communication. During his presidency, The New York Times started a list of all of the people, places, and things that Trump insulted on Twitter. In four years, they recorded a total of 598 insults!

Click through the gallery to see who (and what) felt the wrath of Trump's keyboard while he was president.