Story highlights Huma Abedin joined Twitter to criticize Ben Carson's opposition to a Muslim president

Abedin is a close Hillary Clinton aide who is controversial among conservatives

Washington (CNN) Long-time Hillary Clinton aide Huma Abedin offered her first-ever tweet on Monday -- and it's a shot at Republican presidential contender Ben Carson.

Carson is under fire for his Sunday comment on NBC's "Meet the Press" that he "would not advocate that we put a Muslim in charge of this nation."

Abedin, who is Muslim, tweeted: "You can be a proud American, a proud Muslim, and proudly serve this great country. Pride versus prejudice."

You can be a proud American, a proud Muslim, and proudly serve this great country. Pride versus prejudice. — Huma Abedin (@HumaAbedin) September 21, 2015

Nick Merrill, Clinton's traveling press secretary, also tweeted out a behind-the-scenes video of Abedin's first tweet.

"This is too good not to share. @HumaAbedin pressing send for the first time," he said.

This is too good not to share. @HumaAbedin pressing send for the first time. pic.twitter.com/tBpLPGORxB — Nick Merrill (@NickMerrill) September 22, 2015

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