NBA All-Star weekend is a star-studded affair as celebrities and other athletes from around the sports world show up to take in festivities and hang out with the Association's best players.
Furthermore, celebrities were involved in the pre-game festivities as Kevin Hart and a number of other stars helped kick the game off.
The anthem singers were also famous musicians as the Barenaked Ladies sang the Canadian anthem and Fergie sang the American anthem
As you can see, the reaction was mostly negative to Fergie's rendition of the anthem and Draymond Green may have had the most noteworthy reaction to it.
If it was only one person, you could argue he or she wasn't laughing at the anthem, but based on the reaction across the internet and from the close ups of players and celebrities, it's safe to say you can't make that argument.
(H/T: FTW)