Ok, rather a lot to unpack here - and my time is very limited - but let me try to address some of the points which are, I think, perhaps falling a little short in their current state.
Firstly, the label of fascist/neo-fascist group applied to Britain First is a near-universal one. Have all these people, from official bodies to journalistic outputs, all collectively descended to the level on an internet chat forum and decided to label anyone who disagrees with them as Hitler's fanboys? Of course not. Only the terminally bereft of critical thinking would believe that.
Rather, the label is a direct response to the ideologies, self-proclaimed ideologies I should add, espoused by this group. They are quite simply, by every reasonable measure, a hate group who follow neo-fascist ideologies. That's neo-fascist, not old school fascist, as they do not - to the best of my knowledge - also believe the democratic state should be dismantled.
Secondly, I'm afraid I must refine the statement "However multicultural society has been proven over and over again not to work" to "Some multicultural societies, in certain circumstances, are sometimes unsustainable".
In point of fact, I'd suggest that not only have multicultural societies not failed in a historical context, but they have thrived.
Almost every nation on earth, including the people of the same fair Albion isles that members of these hate groups suggest should always be first in the queue based on a misunderstood notion of 'purity', has come about precisely because of multiculturalism.
Put simply, our nation today - such as it is - is stronger for migration and multiculturalism and not weaker, despite the hysterical screeching of the likes of Mr Farage and the Daily Mail.
Finally, if I can address a few points from the last paragraph; specifically "Why are their views lesser than yours? Do you have evidence for the collective defamatory labels you have given them or are you deliberately trying to provoke negative response to escalate hostilities?"
On the first point, I'm not sure it is stated that any view at odds with yours are "lesser", rather, that those who hold views which - in this case - espouse respect and inclusivity for cultures different to their own reserve the right to gather and oppose those who preach a rhetoric against those values.
On the second point, the question is backwards. If a statement is made, in this case the statement that Britain First are a known hate group with fascist/neo-fascist ideologies and an intolerance toward people they consider as unworthy, then it is up to detractors to disprove it.
It's a little like the old argument of the Creationist demanding evidence for the Theory of Evolution or they will continue to subscribe to their, very clearly batshit, idea of the world. The onus of responsibility rests on you to disprove.
In my specific case, I'm perfectly comfortable with the evidence that backs up my statement, but I neither need - nor am inclined - to do people's homework for them.
There is a considerable more to be said on this subject but, alas, I'm out of time.