Golden State Warriors coach Steve Kerr belonged to another team before Game 2 of the NBA Finals: One fighting for sensible gun laws.

The activist and former NBA player wore a “Vote For Our Lives” T-shirt to the game on Sunday advocating tighter firearms laws, USA Today reported. A gunman killed 12 people in Virginia Beach, Virginia, just days earlier.

“The shirt has everything to do with the tragedy in Virginia Beach and how devastated so many families are and so many people are,” Kerr told reporters before the Warriors defeated the Raptors in Game 2 (watch the clip above). “The shirt’s a reminder that the only way we can get out of this mess is to actually vote, and to vote for people who are going to be willing to create some change in our gun laws in our country.”