A video purporting to show the brother of Denver Nuggets star Nikola Jokic punching a fan after the Nuggets’ game vs. the Los Angeles Lakers has gone viral on social media. The TikTok video posted following the game at Ball Arena displays text that says, “Jokic brothers going wild,” with a flushed-face emoji. It shows two men in the stands walking toward another man, and as someone yells an expletive, one of the men, who the poster said were the brothers, punches the man sitting lower in the stands. It’s unclear what caused the altercation Monday and if the man...