Johnny Depp is Not the First Celebrity to Joke About Wanting Donald Trump Dead

Johnny Depp may have just crossed the line.

The Pirates of the Caribbean actor appeared to threaten U.S. President Donald Trump with assassination during a speech at the Glastonbury Festival in the U.K. on Thursday.

Depp, 54, brought up the topic of Trump with a question to the crowd. "Can we bring Trump in?" Depp said, to a chorus of boos from the crowd. "No, no, no. you misunderstand completely. I think he needs help," Depp continued.

He acknowledged that his next remarks would be controversial. "This is going to be in the press and it'll be horrible. But i like that you are all a part of it. When was the last time an actor assassinated a president?"

The crowd responded with a mixture of cheers and gasps, clearly shocked at what Depp had appeared to suggest. He quickly qualified: "I want to clarify: I'm not an actor. I lie for a living. However, it's been a while. Maybe it's about time."

To answer Depp's question: The last time an actor assassinated a president was in 1865, when John Wilkes Booth, a stage actor, shot then President Abraham Lincoln in the back of the head during a performance of the play Our American Cousin .

Depp's comments are not unique; the subject of Trump's assassination has been tackled—or at least appeared to be—by several other big-name actors and musicians.

Madonna

The "American Pie" singer is a longtime critic of Trump and offered to perform oral sex on voters who backed Hillary Clinton during the presidential campaign. But peak controversy hit in January after comments made by Madonna at the Women's March in Washington, an event that came one day after Trump's inauguration. "Yes, I'm angry. Yes, I am outraged. Yes, I have thought an awful lot about blowing up the White House. But I know this won't change anything. We cannot fall into despair."

Madonna claimed her comments were taken out of context, but that did not stop Trump supporters—including former House Speaker Newt Gingrich—claiming she should be arrested. Trump himself said that the singer was "disgusting" and that "she hurt herself very badly" by making the comments.

Snoop Dogg

The Doggfather and Trump have had a complicated relationship: Trump once praised Snoop during his time on The Apprentice as "one of the nation's best-selling hip-hop artists" but things started going downhill when Snoop announced he'd be voting for Hillary Clinton in the 2016 election. He also said that Trump's victory was only possible in "Amerikkka," a seeming reference to the Ku Klux Klan.

In March, the video for Snoop's remix of "Lavender" by Canadian band BadBadNotGood featured a clown parody of Trump—named Ronald Klump— who is shot with a toy gun near the end of the video. The video was denounced by critics including Republican Senator Marco Rubio, and Trump himself said the rapper deserved "jail time."

Kathy Griffin

Perhaps the most direct and shocking of the Trump assassination stories was that of the U.S. comedian. Griffin posed in a photoshoot holding a bloodied fake head that clearly depicted Trump.

The backlash was immediate: Griffin's CNN colleague Anderson Cooper said he was "appalled" by the photoshoot; the photographer, Tyler Shields, removed the image from his website; and Griffin issued a public apology, admitting that she had "crossed the line."

Griffin's apology did not save her from being axed by CNN, while the Trump family also hit out at the picture. First lady Melania Trump said that the photo was "very disturbing" and questioned the state of Griffin's mental health, while the president himself said that his children—especially 11-year-old Barron—were having "a hard time with this."

The Public Theater

The New York City-based organization staged a modern interpretation of William Shakespeare's Julius Caesar in the city's Central Park in May and June. The play sparked criticism for its depiction of the lead character in the style of Trump, replete with wild blond hair and an oversized red tie. As in Shakespeare's original, Caesar is assassinated by his close ally Brutus and others in the performance.

The play was disrupted by right-wing protesters last weekend, who claimed that it was "normalizing violence against the political right" and accused the audience of being "Nazis like Joseph Goebbels," the right-hand man of Adolf Hitler.

Trump's son, Donald Trump Jr., also slammed the play and appeared to link it to the shooting of Republican whip Steve Scalise and other congressmen in Virginia on June 14. Several major organizations pulled funding for the play, but the theater defended its interpretation.