.... wait .. something just occurred to me rereading your 3-way omlette 
blacks must trust police.
There's another scenario by which a given demographic is "needed" to trust the police ...
Should we have immunity hour in order to facilitate this trust? That no one is going to be arrested, detained, fired-upon ... or even see a police officer for any crime during the hour of X
See, this is what we're supposed to believe of the sanctuary city. Perhaps we need sanctuary day or week??? You know ... to build trust.

blacks must trust police.
There's another scenario by which a given demographic is "needed" to trust the police ...
Should we have immunity hour in order to facilitate this trust? That no one is going to be arrested, detained, fired-upon ... or even see a police officer for any crime during the hour of X
See, this is what we're supposed to believe of the sanctuary city. Perhaps we need sanctuary day or week??? You know ... to build trust.