Red flags usually are used as warning signs in relationships and in life, but the emoji recently has become a means for people on Twitter to share objectionable actions.

Celebrities, including Dionne Warwick and Dolly Parton, began offering their own “red flags” on Twitter, according to NJ.com.

Here is a look at some of the best on Twitter from celebrities, companies and others:

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MARTA's Kensington Station in DeKalb County, seen last month, was the site of a bus collision Sunday, Nov. 2, 2025, a MARTA spokesperson said. (Abbey Cutrer/AJC)

Credit: abbey.cutrer@ajc.com