People in gated communities tend to behave in incredibly selfish ways that usually fuck over the working-class because they have that degree of separation afforded to them by living in a gated community.
Mass migration? They only get the advantages of a cheaper labour pool thanks to a surplus of labour causing wage suppression, and don't have to deal with the societal unrest and crime caused by shoving a bunch of third world citizens into a community. They also get to look "more tolerant" to their fellow gated community inhabitants, which feeds their upper class vanity, as we all know walls and border controls are discriminatory and racist. (Except for OUR walls, of course - gotta keep the peasants out somehow!)
Race Relations/Diversity? I'm sure that the inhabitants of an almost entirely White gated community (With maybe the occasional token Asians/Blacks/Hispanics) are experts on the topic. Hence why they'll lecture those outside of their ivory towers about the topic, and how they need to let more minorities into their communities to avoid being racist. Despite the fact that they'll usually be the first to call the cops the moment a Black person trespasses in their gated community.
The police? They'll advocate for the removal of the police so they can advocate for how revolutionary and tolerant they are to their fellow upper-class twits, as their gated community usually has it's own private security contractor to deal with keeping their community safe.
This is just a few examples, you can pull tons of examples of their hypocrisy thanks to their isolation from the general population.
This is just how the upper-classes behave in general. They live in their own little nepotistic bubble, where they almost never have to associate with any riff-raff. (That doesn't refer to them as "sir/madam") They send their kids to private schools that cost thousands a month, hire each-other solely for nepotistic reasons, and live in their gated communities surrounded by fellow upper-class twits. People fail to realize how vastly different the life experience is between a working-class and upper-class individual, and gated communties are only one facet of that.