Oops, it doesn't look like 'native genocide day' is a national day..

Other days

hoodie

Hoodie Day
china

China Day
my little pony

My Little Pony Day
ormille

Ormille Day
ruby

Ruby Day
azonto is acceptable

Azonto Is Acceptable Day
fiancee

Fiancee Day
bow tie

Bow Tie Day
law

Law Day
boba

Boba Day