Don't be silly, of course not - there have always been nutters, extremists, racists, and there always will be - they are best ignored and avoided (and punished if they break the law)
But I want to live in a country that is fair, accepting of peoples differences, has great public services. Unfortunately our general fairness and generosity makes us a magnet for all and sundry to rock up in dinghies un announced.
Immigration is categorically a good thing, but done in a proper fashion, with applications, checks and visas so said immigrants can hop on a plane and land welcomed, with a job to go to and somewhere to live, and a tax code, in numbers that can be accommodated without disadvantaging the current population.