As a result of of those incidents, LAPD and LASD have concentrated on increasing their profile and public view within such communities.
Furthermore, Inglewood is served by Inglewood PD, Unincorporated Watts and Compton are served by LASD and The Watts neighborhood within the city of Los Angeles by LAPD.
The communities have changed a lot in the 20 years since the "Rodney King" riots which I am old enough to have remembered. What were once predominantly African-American communities have transformed into mixed Hispanic/African-American and predominantly Hispanic neighborhoods. The vast majority of these residents respect the local police presence and appreciate what they do for their communities.
The officer killed was in Riverside, where I used to live. This is also a community where the vast, vast majority of those individuals respect the local police. I am sure there will be some East Side Rivas or other gang members who cheer the killing, but again most people are mourning the city's loss.
Again, that's a gross misrepresentation of the vast majority of citizens within these communities.