Redwood City CA police are forbidden to do roadside sobriety checkpoints in the Latino area of the city, only in the white, upscale neighborhoods.
Constitutional protection from unreasonable search and seizure only applies to illegal aliens in CA.
Arresting illegals and criminals of other types is just not profitable and bad for morale among the union rank and file.Once arresting an illegal becomes a profit instead of an expense, look for equal application of the law.