I understand that the weight of injustice and racism is cumulative--it becomes more crushing every day that it survives.

This may not be much of a comfort, but the acquiescence of White people was actually worse during the Jim Crow era (I grew up in the South at the end of that period in the 1950's). Before the Civil War, most White people didn't own slaves, but after the war, almost all White people worked to keep Black people from attaining their Constitutional rights, or kept quiet about injustice.

I don't know what percent of White people favor the status quo and what percent are working to fix the status quo (those are really the only two categories)--probably the former are the vast majority (which is why we haven't fixed the problems of racism and economic oppression after centuries).

There still are not enough White people doing something, and the progress that's being made is unforgivably late, but the movement toward justice is inexorable. Don't give up hope, and keep calling the problem out.