Hundreds and thousands of people marched to London on Saturday to ask for another opinion on Britain's divorce from the European Union.
Sky News host Jayne Secker questioned Brexit activist Gina Miller about why she felt it was fair that there was another vote.
She said: "The people had their opinion, why should there be another referendum?
"What happens if you do not show up in a second referendum? Do we have a third?
"It's just an endless series of referendums."
Miller, who won a case before the Superior Court against the Government for the participation of the Parliament in Brexit, affirmed that it was "democratic" to have another opinion.
She said: "No, it's not an endless series because in reality, it would be a vote on the real options now that we know what they are."
She added: "What is so important is the mechanism of returning it to people so that they can decide their own future.
"What is on the ballot, if it is a general election, will depend on parliamentarians, it is a gift from parliamentarians to make this happen."
When asked why it was fair to have another vote, Ms. Miller said: "For democracy. Because democracy is not a day, a vote, once, it is an evolutionary process in which we know facts and we decide and we are capable of changing our minds as David Davis himself said in 2017.
"Today is about solidarity, to unite and want to have the right, the democratic right, the moral right to say what happens in our future, now we know what the real options are".
He added: "If you look at all the polls, public opinion is definitely not what it was, since I traveled the country, I know it is not what it used to be, until now.
"The fact is that now we know what the deal will be like. And for many people, regardless of how they voted in the referendum or in the general election last year, there is more data on the table and they have the right to decide their own future, due to the stagnation that is happening in parliament and the fact that this is so shambolic.
"I want to say that every day, every report, every industry, this is not what they told us."
The march took place in the capital of Park Lane around noon and ended in the Parliament Square.
Around 2 in the afternoon, supporters of a popular vote near the Parliament Square gave speeches.
The mayor of London, Sadiq Khan, tweeted his support for the march in London on Saturday after joining the Popular Voting campaign to demand another opinion when leaving the EU.
On Friday night, he tweeted: "Tomorrow, I will join people from all corners of our country to demand that Britons have the last word on Brexit." There is nothing more democratic than trusting people to have the last word. about our future. "
A statement on the Voto del Pueblo website says: "Whether you voted with permission or remain, no one voted to make this country worse, harm jobs, damage the NHS, affect the future of millions of young people or make this country more divided. .
"The clearer the form of the final agreement with Brexit, the clearer it will be that it will not do anything to improve social justice, reduce inequality, increase our standard of living or create a better future for future generations."
Brexit that supports the conservative deputies has criticized the march alleging Those that remain they are simply trying to re-run the EU 2016 referendum.
The Prime Minister, Theresa May, has already ruled out another vote to leave the European Union.
Speaking at the Conservative Party conference earlier this month, the Prime Minister attacked "prominent people" who want to stop Brexit.
Ms. May said: "There are a lot of prominent people in British politics, in parliament and outside it, who want to stop Brexit.
"Their last plan is to call a second referendum, they call it a popular vote, but we had a popular vote and the people decided to leave."