Crenshaw, 38, has been hit with the insult - a reference to the late moderate Republican Senator John McCain - ever since Tucker Carlson first brought the moniker up in mid-May.
The Congressman was being accosted by a group of hecklers including Alex Stein, a self-described "comedian and social activist" and others whom witnesses told Mediaite were Proud Boys at the Republican Party of Texas convention Saturday.
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The video, which Stein tweeted out himself, shows Stein and others approaching Crenshaw at the event.
"Eyepatch McCain! Hey, Eyepatch McCain! Look at Eyepatch McCain right here! You're a globalist RINO!" he is heard yelling at the Congressman before being led away.
One of Crenshaw's staffers was allegedly shoved throughout the protest, although the protesters did not make physical contact with the congressman.
Crenshaw hit back on Twitter later Saturday, calling Stein an "angry little boy" who "can't get girlfriends."
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Stein quote-tweeted Crenshaw and commented: "Dan, I'm 2 feet taller than you bud...lol."
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Carlson first used the name - a reference to the late Arizona Senator McCain's occasional moderate opinions - on May 16 after Crenshaw was critical of those who didn't back military aid for Ukraine, according to The Daily Beast.
"You know the more I think about it, it takes a lot of gall for eyepatch McCain to attack moms who are worried about baby formula as pro-Russia," Carlson announced on his Fox News show.
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"This is just trash," McCain tweeted. "That being said, I'm sure @DanCrenshawTX doesn't mind the comparison."
In response to this latest dust-up, McCain has retweeted both Crenshaw's response and a tweet by CNN host Jake Tapper calling it "[a]absolutely disgusting that the far-right has turned a Navy SEAL's war wound into some lame attempt at derision."
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Another Twitter user later accosted Crenshaw for being a "World Economic Forum sellout."
Crenshaw, previously a favorite target of liberals to the point that then-SNL cast member Pete Davidson publicly apologized to him for mocking his eyepatch after conservatives including Carlson ripped the comedian, has since come under fire from the far right.
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Congresswoman Marjorie Taylor Greene had gone after Crenwhaw when he appeared on Fox News and called for federal interventions to deal with the rapid spread of the omicron virus variant.
"So what the federal government should be doing, again, is using their FEMA resources to bolster a lot of these testing sites, open up new testing sites," Crenshaw announced.
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