Fans pointed out that the song was not appropriate for the event and blasted the band for performing the song at the Christchurch benefit gig.
However, some fans were over the moon about their performance, praising them expecially for singing Don't Forget Your Roots.
Newstalk ZB caller Hannah attended the event and said it was "amazing".
"It was so good, it was the loveliest, most love-filled night, it was so good," she said.
"There were definitely a few bands we didn't know but it was so good, it was amazing.
"It was beautiful, it just made me so proud to be a Christchurcher and a New Zealander as well, I think we do love and care so well, it was lovely to be a part of that."
Other artists who also performed included Bic Runga, Anika Moa, Don McGlashan, Stan Walker, Hollie Smith, Shihad, The Exponents and many more.
The event was hosted by mental health advocate and comedian Mike King.