In June 2020, Thirlwall attended a Black Lives Matter protest in the UK, that surfaced due to the death of an African-American man George Floyd, and attended the Black Trans Lives Matter march in London. In July 2020, she called L'Oréal, for not supporting the black trans community after their treatment towards model Munroe Bergdorf. In 2020, she called out the media after journalists had mistaken her for band member Leigh-Anne Pinnock. A journalist had used an image of her in an article that was focused around Thirlwall. In the interview she revealed that journalists often confuse the pair during interviews and that photographers often shout Pinnock's name at her whenever she is attending events.
