First thing's first: officially bush that black and brown alliance and start mobilizing against them legally as white people practicing racism against a minority group (blacks).
That would require leaders willing to work with each other, we see what happened to Malcolm and Martin; Pac and Big.
Yes, learn Spanish. Learn Spanish not only for the added benefit but for the bilingual only job postings to get to the real root of their discrimination. They use language as a proxy to keep blacks out of jobs they control through HR and managerial positions.
There are a plethora of strategies and no one is greater than the whole. They should all have a singular effect when correctly used by the group.
We're not functional as a group, so we don't have the effect they do.
We can either be the ant or the lizard. Currently, we're the lizard.