Golden State Warriors head coach Steve Kerr was absolutely livid before his team's playoff game Tuesday night ... pleading with politicians across the nation to do something after a mass shooting at an elementary school left at least 18 children and 3 adults dead.
"When are we going to do something?" 56-year-old Kerr started off his impassioned speech. "I'm tired. I'm so tired of getting up here and offering condolences to the devastated families that are out there."
"I'm tired of the moments of silence. Enough!" he added.