Some people might remember a week or so ago on AIBU there was a thread about whether the OP should move to Dubai. Many posts praised the low crime rate & compared it favourably to UK.
I was critical of this for several reasons. Checking facts later, I realised that nearly 90% of Dubai residents are Expat workers or migrants who've held in a restrictive system (the kafala system has been strongly criticised for being essentially indentured servitude, and there have been reforms but it still seems concerning).
It's unsurprising crime, especially violent crime, would be low when most people are either temporary expats or people who've likewise been sourced specifically to come and work (and are held in a punitive system), and whose families often depend on the remittances they're sending back.
Obviously the harsh criminal code in Dubai (though there have again been some recent reforms) plays a role, but the population makeup alone makes comments on Dubai's superior morality/crime control etc very questionable.
I myself think policing and crime need serious reforms in the UK but people comparing it to Dubai favourably are comparing apples to authoritarian oranges.