Washington Capital fans broke out into song at the Capital One Arena in Washington DC after the Capitals won their first ever Stanley Cup on June 7.The Capitals defeated the Vegas Golden Knights 4-3 to win the first Stanley Cup in the team’s history.Fans who watched the final in a sold-out Capital One Arena sang ‘We Are The Champions’ following the final whistle. A clip of the singalong had earned over 5,000 views at the time of writing. Credit: @ImDavidDunn via Storyful