People are entited to an opinion it doesn't mean all opinions are equal.
Something like 70% of the British population would bring back hanging.
Don't make them right.
Lets be honest, the people that say that immigration is their biggest concern are doing so mainly because their perceptions have been shaped by the media or because of their own prejudices, or a very small limited personal experience. Not because of any valid reasons based on broadly gathered evidence and analysis put to peer review.
If we do things that people want, because they think it might bring about positive change, but aren't factually proved,lets bring grammar schools ( oh wait), hanging, national service (yougov shows a poll saying people support that to), and the 1950s in general.
Just because something is popular doesn't make it right, or a valid opinion.
The Asimov quote about democracy, and no it does not mean that your ignorance is as good as my knowledge.