'This certainly highlights that Brighton and Hove is a hotbed of Republican dissidents and is now proven to be so.'' 
AS I SEE IT/MY OPINION
Now it may well be, that those petitioners are republicans, who, of course, have a right to their opinion.
After all, the monarchy is a remnant from old times, especially the Middle Ages, when, in the feudal society, the king, with his liegemen, the nobility, had this function of ruling the country and protecting the country against foreign invaders, which functioned well, in this case in England, untill members of the royal branch started to kill each other  and other groups like merchants [also called the third class] demanded their position, which, in France, led to the French Revolution, centuries later. 
So for a part the monarchy is no more than Folklore, but in my view, most British people still value it and it has a binding function too.
And as far as the petitioners are radical socialists, I agree with them about social injustice, but why taking this on Prince Harry and Meghan Markle?
When you want to fight social injustice, take the big multinationals first, which are the heart and bones of capitalism.
ENOUGH ABOUT HISTORY AND SOCIAL STRUGGLE [hahaha]
Because I have a grisly suspicion, that the petition against Prince Harry and ms Meghan Markle is NOT about the legitimacy of the monarchy or social injustice, but based on racial issues.
And I don't say this out of the blue!
Why this petition is coming now, since the Queen already granted her grandson and his wife their titles on the occasion of their wedding, nearly two years ago? 
That is strange.
You are of course aware of the fact, dear Councillors, that from the beginning, from certain sides [especially parts of the press] there has been a smear campaign against Meghan Markle, which, according to me and many others, is closely connected with the fact, that she is black.
There were some remarks in that direction  and at a certain point the smear campaign went that high, that Prince Harry and his wife, Meghan Markle, sued the paper Mail on Sunday and Prince Harry launched an attack on the tabloid press. 
As I commented then, I admired Prince Harry's stance, calling it ''the only honourable thing to do. 
And now this nonsense again.
It seems like a nasty pattern to me.
Councillors, you have just read the reason, why I am very upset by this petition, trying to strip the royal rights from Prince Harry and ms Meghan Markle and although it seems that it is only republican or social warrior like motivated, yet I have serious doubts and concerns about it.
I can't prove it, of course, but seen in the light of the inferior smear campaign against Meghan Markle, which has even resulted in repulsive remarks about her and Prince Harry's son , I fear that this petition is, again a token of racism, direct or indirect, against ms Meghan Markle and that is what I can't and will not accept!
Therefore I implore you to seriously consider NOT to grant the petitioners and remain loyal to the decision of the Queen to grant her grandson and his wife the title of Duke and Duchess of Sussex.
And if you don't believe me, or disagree with my point of view:
Please ask yourself this question:
Do you think there would have been a similar petition, when it concerned Prince William and his wife ms Kate Middleton?
Do the right thing and don't grant the petitioners
SEE FOR NOTES