BNP leader Nick Griffin yesterday walked free from court after he was cleared of two race hate charges.
A jury failed to reach verdicts on two further allegations he faced and was discharged.
But the Crown Prosecution Service confirmed that it will seek a retrial of the 46-year-old Cambridge graduate and fellow defendant Mark Collett.
Griffin emerged from Leeds Crown Court saying he was vindicated over calling Islam a "wicked, vicious faith" and said he had nothing to apologise about in relation to the speeches he made which landed him in the dock.
He was prosecuted alongside fellow BNP activist Collett after police investigated six speeches made by the pair in West Yorkshire in 2004.
They were recorded by an undercover reporter and formed part of a documentary on the party called The Secret Agent, which was watched by five million people on BBC1.
Yesterday, he was acquitted of using words intended or likely to stir up racial hatred in relation to a speech he made at Morley Town Hall, near Leeds.
In the speech, which was played to the jury during a 14 day trial, he said London murder victim Stephen Lawrence was "notorious for taxing the younger kids for their dinner money and he was a drug dealer".
Griffin also appeared to predict the July 7 London bombings at the meeting by saying there may be an attack by second generation British Pakistanis.
Collett was cleared of charges in relation to two speeches and the jury failed to reach verdicts in relation to two others.
As the pair walked out of court he was cheered by dozens of supporters, who were penned in behind crash barriers shouting "Freedom, Freedom" and "BNP, BNP".
Griffin spoke to reporters with a barrier of police and BNP minders separating the media from the massed demo.
Griffin said: "If the Crown Prosecution Service feel they must continue to persecute us for speaking the truth, we will see them in court."
Asked whether he would tone down his language in future, Griffin replied: "I don't think so, no."
Griffin, of Llanerfyl, Powys, denied two counts of using words intended to stir up racial hatred and two of an
alternative charge of using words likely to stir up racial hatred. These related to two separate speeches.
The jury failed to reach a verdict in respect to one of the speeches.
Collett, of Swithland Lane, Rothley, Leicestershire, denied four charges of using words intended to stir up racial hatred and four of using words likely to stir up racial hatred. These relate to four speeches he made.
He was cleared in relation to two speeches and the jury failed to reach a verdict in relation to the others. The judge discharged the 11 member jury after more than nine hours of deliberations.
The court heard the CPS will make a decision on whether a retrial will be held in the next few days.
Griffin said: "It's a tremendous day for the people of this country. This evening millions of people in Britain... will be walking a little taller and telling the truth like they want to tell it.
"It's a tremendous victory for freedom. Mark's been found not guilty on half the charges put against him. I've been found not guilty on half the charges put against me.
"The Crown Prosecution Service are now going to have to go and decide whether they want to do it all over again.
"If they want to do it all over again, well we're here.
"This has given us the largest wave of donations in the history of the party, the best publicity in the history of the party and if the Crown Prosecution Service feel they must continue to persecute us simply for telling the truth then we'll see them in court."
He said a "very large majority of a decent jury" did not agree that he was inciting racial hatred in his speeches.
Griffin said: "I was speaking the truth, the blunt truth sometimes, to honest audiences of decent working people in West Yorkshire, who in some cases are facing terrible problems, particularly with the grooming of their children by racist paedophiles from part of the Muslim community.
"Those people needed to hear the truth and they needed to hear that there's a political party around to speak the truth and stand up for decent people."
Griffin said the prosecution failed to get a verdict for "one simple reason".
He said: "We are innocent of inciting racial hatred.
"We don't hate anyone of any ethnic minority in this country.
"We don't blame them for being here, in the case of asylum seekers, seeking a better future for their kids.
"We blame our Government for putting those people over our people."