"I started this thread to be the evidence you demand."
Grammatical gibberish, but I think I've worked out what you are trying to say.
A dozen or so contributors on a subject that effects a community of 300,000 people is not evidence, it is merely the opinion of a dozen or so people.
I have provided masses of evidence, I have passed on our experiences and those of some of the victims of this racist behavior - you in return have produced nothing - nothing whatever.
You have been given facts and figures (where they exist), you have either ignored them or dismissed them out of hand.
There is not one opinion been put forward here that is backed up by actual evidence of any experience of contact with Travellers - it would have interested me greatly to have been able to have compared notes with anybody who had such experience.
You have been given examples of the findings of people like Donald Kendrick, who dedicated his life to work with Travellers and wrote one of the most important works on Traveller persecution 'The Destiny of Europe's Gypsies' - not worth even an acknowledgement.
I would have expected that people who disagree with my and their argument would at least have read and disputed the documentary evidence - not your style, as you have adequately proved in the past.
I can accept that people have not seen these signs; the opportunity to observe the persecution of a community as small as 300,000 people throughout the whole of the UK is so slight that it would be extremely surprising that they had.
I repeat, it is no argument to claim that something doesn't exist because a handful of people "haven't seen it" - you would be laughed out of any court in the land.
You bring nothing to this argument other than your ongoing racist bigotry.   
Produce some real evidence or you simply have no case.
Jim Carroll