Violence isn't the main issue though..
Yes something needs to be done about immigration especially with unemployment rising but that doesn;t mean to stop all immigration that some of these parties advocate.
Terrorism is never welcome yet these groups seem to want to clamp down on a certain religion just because some of them are extremists..
As far as the flag the Union Jack yes it should be flown on all public buildings but that's a case of pride in the United Kingdom and nothing to do with immigration, religion or building practices
Seems to me that they're grasping at straws and it would be interesting to see the locations/demographic of the poll and exactly what other questions were asked at the same time as leading questions can change the answer to the next question.