For months, the defining moment of 2019 was the St. Louis Blues winning their first Stanley Cup. Especially since everyone is now copying that "promote an interim coach, find the song in your heart and you too can go from worst to first!" thing.
But then Don Cherry and Bill Peters personified the sports' diversity and inclusion problems. Then Mike Babcock, Marc Crawford and Peters (again) symbolized the physical and mental abuse by coaches against players at every level of hockey. And the definitive moment was redefined.