I have an answer for the VDARE.com reader who asked why whites don't protest the railroading of white cops. The answer isn't that "way too many whites are SJWs."
The answer is that most conservative whites work during the day and take care of families at night. In the introduction to P. J. O'Rourke's book Parliament of Whores, J. O'Rourke describes a conversation that took place in the 1980s:
Not long after [Andrew Ferguson] and I met, we were driving down Pennsylvania Avenue and encountered some or another noisy pinko demonstration. “How come,” I asked Andy, “whenever something upsets the Left, you see immediate marches and parades and rallies with signs already printed and rhyming slogans already composed, whereas whenever something upsets the Right, you see two members of the Young Americans for Freedom waving a six-inch American flag?” “We have jobs,” said Andy.
Left-wing protesters are either white college students or professional activists or unemployed blacks who live on welfare and don't much care about their families, such as they are. These groups have the time to make trouble in the streets over imagined problems.
Conservatives whites—who pay the taxes that support all these unemployed leftists—don't have time to make trouble in the streets over very real problems, not least railroaded cops.
The left knows this and acts accordingly.