Mavericks Fan Kicked Out Of American Airlines Center For Holding A “Fire Nico Harrison” Sign. Kicking people out for holding up a “Fire Nico” sign. Have some shame @dallasmavs @NicoHarrisonGM @GrantAfseth pic.twitter.com/fVCY4BjAz1 — #1 Nico Harrison Hater (@himothyfan11) February 11,…