Donald Trump ally Roger Stone has repeatedly used his Twitter account to call for the killing of public figures.

Stone tweeted that Hillary Clinton and George Soros should be “executed,” Sen. Bernie Sanders (I-VT) should be “shot” for “treason,” and “angry citizens should find and hang” Gov. Dannel Malloy (D-CT). He wrote that former Sen. Rick Santorum (R-PA) “will never be President- I will order a mail-order rifle first.”

Stone has also fantasized about the deaths of media figures. Stone tweeted to journalist Jill Abramson, “DIE BITCH!”; tweeted about CNN commentator Ana Navarro “killing herself”; and wrote of Fox News commentator Ed Rollins: “Ed Rollins is on FOX ? If he isn't dead he should be #hack #loser #fraud.”

Stone is a longtime adviser and confidant to Trump. He now heads a pro-Trump super PAC and has pledged to disclose the hotels and room numbers of Republican National Convention delegates who are purportedly trying to “steal” the nomination from Trump. Stone’s plan has been heavily criticized for potentially inciting violence; Stone denies this, claiming, “I renounce violence.”

Media Matters and the conservative Media Research Center have both called on media outlets to keep Stone off of their airwaves. MSNBC and CNN have both banned Stone as a guest.

In July 2014, Stone tweeted that Hillary Clinton should be “executed for murder”:

@thejenn999 Hillary must be brought to justice - arrested , tried , and executed for murder .

— Roger Stone (@RogerJStoneJr) July 11, 2014

Stone tweeted that Sen. Bernie Sanders should be “arrested for treason and shot,” as Media Matters previously documented:

@KennettDems @RTED2016 Soviet Agent Bernie Saunders, Should be arrested for treason and shot.

— Roger Stone (@RogerJStoneJr) April 18, 2014

Stone wrote that philanthropist and businessman George Soros (who has donated to Media Matters) should be “executed”:

@Outdoorguy64 Soros must be detained,charged,tried, convicted and executed . He is a cancer on the body politic

— Roger Stone (@RogerJStoneJr) March 15, 2014

Stone reacted to the news of GE moving from Connecticut by stating that “angry citizens should find and hang” Connecticut Gov. Dannel Malloy (D) :

@LibertyandEcon angry citizens should find and hang Malloy

— Roger Stone (@RogerJStoneJr) January 22, 2016

Stone tweeted: “Religious fanatic Rick Santorum will never be President- I will order a mail-order rifle first.” Stone frequently writes about the John F. Kennedy assassination; the Warren Commission ruled that Lee Harvey Oswald killed President Kennedy with a mail-order rifle.

@RickSantorumUSA Religious fanatic Rick Santorum will never be President- I will order a mail-order rifle first #Facist #PALoser #nut

— Roger Stone (@RogerJStoneJr) February 4, 2013