That's very true. The Jewish policemen in Warsaw who assisted the Nazis had little to fear from their disarmed fellow Jews, and much to fear from their Nazi masters.
In this country, local LEOs who collaborate with any home-grown Gestapo will have MUCH to fear from their local citizenry, who will know their names, faces, and home addresses.
This counterbalance will mean that local LEOs will have to think very hard about which side they are on.
This might sound tin foil hattish also but I firmly believe that next time it will be Christians that will be singled out along with various other groups that don't go along with the program.