#2. Roman Reigns - Flips off the WWE Universe on the first show with crowds back

Roman Reigns was part of the opening match on SmackDown when the WWE Universe returned in July. He teamed up with The Usos to take on WWE legends Rey Mysterio, Edge and the young Dominik Mysterio.
The match itself was fine, with Jey Uso picking up the victory after a pin over WWE legend Rey Mysterio. Post-match, Roman Reigns tapped out to Edge, who put a rod in his mouth and submitted him unofficially.
Details of Goldberg's last match HERE
Interestingly, when Roman Reigns was leaving with The Usos, he heard the audible "you suck!" chants from the crowd. In a heel move, he turned around and briefly flipped the crowd off before walking away. It was captured on camera:
Roman Reigns would face Edge two nights later at Money in the Bank 2021, beating him thanks to some assistance from Seth Rollins. This flip-off didn't have the same kind of maliciousness as the ones previously mentioned. It was more of Roman Reigns being a heel off-camera.