The biggest preparators of Sikhphobic hate crime and attacks offline and online have been muslim fascists and far right wing racist white nationalists.
Yet Sikhs have been extremely slow recognising this fact and speaking out against it. Even the term "sikhphobia/sikhphobic" is relatively new and should have been used ages ago when muslims started to come out with islamophobia, homosexuals with homophobia and jews with antisemitism.