Mark Foster of Foster The People performs on stage on opening night of their tour at The Observatory North Park on May 26, 2017 in San Diego.

Foster the People’s “Pumped Up Kicks” is about a boy named Robert who terrorizes classmates with his father’s gun, a fact that may have eluded you ever since the song was released in 2011. But it’s still weighing on the band, who declined to play what’s by far their biggest hit while performing in Charlotte, North Carolina on Monday night (Oct. 2), less than 24 hours after the mass shooting massacre at the Route 91 Harvest Festival in Las Vegas.

Partway through the show, frontman Mark Foster took the stage to reflect on gun violence in America, urging the audience to “[love] each other every day” and consider supporting a ban on assault weapons. “It felt wrong for us tonight to play ‘Pumped Up Kicks,'” he said. “It felt like it would’ve been irreverent, even though that song is about gun violence and stopping that.” The band covered John Lennon’s “Love” instead.

Watch Foster’s remarks and the performance below.

This article originally appeared on Spin.