Justin Bieber and a couple of his buddies joined a large group of players playing Pokemon Go in New York. All the players were so focused on looking at their phones and "catching them all" that nobody realized he was playing the game right alongside them. Here is a picture that Bieber's pal posted on Twitter.
Here is a link to the website that has the video of Bieber running around New York playing the game.
Here's the LINK.