You shouldn't let some opportunistic reality TV show be
the basis for your world views.
Well if Western societies didn't function in a miasma of political correctness highly sensitive to even the least prickly of criticisms perhaps Channel 4 or any other outlet for that matter wouldn't have seen a need to reach for an alarmist tone in the way they fashioned their programming in matters such as this, that one could argue have influenced the most recent UK national parliamentary election.
The opinion polls suggested quite the opposite outcome [1] which goes to prove that many of the voters were quite concerned about the issues such as these and general direction in which UK as a sovereign nation was headed, but rather stopped short of voicing them openly, lest they be branded prejudicial or worse.
[1] Election 2015: How the opinion polls got it wrong
http://www.bbc.com/news/uk-politics-32751993