When you're the defending NBA champions, everyone wants to take a jab at you. You're the target, and the entire league is coming after that top coveted spot. On top of that for the Cleveland Cavaliers, LeBron James is one of the most popular player in the league, and has one of the best selling jersey.
When the defending champion Cavaliers come to opposing arena's, it's therefore common to see a lot of Cavs' jerseys. The Phoenix Suns' organization was well aware of the number of Cavs' jersey that would be in attendance, and decided to plan a "Bandwagon Cam" to poke fun at the fans in the opponents jerseys.
Well played, Suns' fans... if only your team played better, as the Cavs took down the Suns 120-116.
