i had been wondering about this. I thought crowder did the "change my mind" tour stuff before charlie kirk, i was wrong. here's what I found.
Turning Point USA, founded by Kirk in 2012, started its campus activities that year, including informal debates and speaking events on college campuses. Kirk gained prominence through videos of these interactions, often at a "Prove Me Wrong" table, and by 2013, these had evolved into organized tours like the Culture War tour in 2019. This was part of TPUSA's mission to promote conservative activism on over 850 campuses.
Crowder's "Change My Mind" segment, where he sets up a table on campuses to debate controversial topics, first appeared in 2017 (e.g., at Southern Methodist University) and became widely known in 2018 with a viral photo from Texas Christian University. It was a recurring feature on his podcast Louder with Crowder, which started in 2015, but the campus tour format followed Kirk's model years later.