Oops, it doesn't look like 'shoot a police in the face day' is a national day..

Other days

slime

Slime Day
kiss a ginger

Kiss A Ginger Day
latina equal pay

Latina Equal Pay Day
one

One Day
nae nae

Nae Nae Day
lisp

Lisp Day
healing

Healing Day
stud

Stud Day
book

Book Day
kale

Kale Day