White people with marginalizations don't understand what it means to be referred to as "white first". It is not an erasure of someone's marginalized identities. It's referencing the capability of someone to use their whiteness or have their whiteness used by others to oppress and suppress other folks with marginalized identities. It's describing group behaviour.
Whiteness allows you to be perceived as a victim in instances where your non-white counterparts would not. That's the dynamic.
One must imagine sisyphus smashing fruit flies with a paper back copy of The History of Sexuality by Michel Foucault
If you're in the northern part of Turtle Island often described as Canada, know that the extreme right are organising anti-2Slhbtqia+ events at each provincial legislature building upcoming wednesday the 20th.
They intend to take their kids out of school and bring them to their hate marches. Most folks who are part of our community probably know about these events already but we could -really- use allies to come out and counter-protest with us.