Geldof the father of a new British revolution
Mr Geldof, now at the forefront of the campaign for fathers' rights in Britain, said a huge and politically active constituency of angry parents wants fundamental changes to the law.
Controversy over the failure of the family justice system in Britain has intensified in recent months.
Campaigners dressed as cartoon super-heroes, including Spiderman and Batman, have staged protests on Tower Bridge, the roof of the Royal Courts of Justice and Buckingham Palace.
One judge, Mr Justice Munby, staged a withering attack on the family courts, saying he was ashamed at the treatment of a father who was denied all contact with a child for two years.
"This is dangerous for the Government," said Mr Geldof, who went through a custody fight over his three children with his former wife, Paula Yates.
"It's a huge constituency out there of women as well as men. It's not just the father who is affected, but the grandmothers and aunts as well. As many women stop me on the street as men. This is coming home to roost big time," he said.
"This law doesn't have a heart or soul. It's cold rubbish. It's deeply and fundamentally flawed.
"Society has moved ahead of the law. The law is so stupid, so brutish in its implementation and simply against the father."
Mr Geldof said: "You haven't got a hope in hell of getting what you want. It's a hopeless battle before you even start. Most men are told to accept their lot, and that's no longer being accepted. We know that because of the growth of activist groups.
"The way that the law treated me and men in general was with contempt. It was humiliating."
Mr Geldof said that ensuring that fathers were given the right to equal access could help stem the tide of divorce, which now affects half of all marriages in Britain.
He predicted that the law would change within the next few decades, making a 50:50 access split the norm - in line with Denmark, Sweden and some US states.
According to the recently formed Fathers 4 Justice group, about 100 children a day in Britain lose contact with their fathers through breaches of court access orders.
A Fathers 4 Justice campaigner dressed as Santa scaled the central gate at Buckingham Palace before Christmas and chained himself to a pillar.
The stunt follows an incident earlier this year when a Fathers 4 Justice demonstrator dressed as Batman breached the perimeter and climbed next to the central Palace balcony.
Britain's Labour Government has promised a green paper to improve the system, including plans for helping parents resolve disputes without resort to the courts.
It also plans to target mothers who falsely accuse their former partners of domestic violence.
"There is no doubt domestic violence is very serious... but there are some cases, and I don't know how many there are, in which domestic violence is being used as an excuse to restrain contact," said Lord Filkin, a minister at the Department for Constitutional Affairs, which is responsible for the family courts.
The green paper would include proposals for "diagnosing" at an early stage whether an allegation of domestic violence was well-founded. While genuine allegations of domestic violence had to be dealt with firmly, action should also be taken against mothers who make false claims.
The move follows a legal battle in which a mother fabricated an allegation of domestic violence as a means of stopping the father having contact with his child.
In that case the claim that the father had abused the child was rejected, leading the judge, Mr Justice Munby, to make an outspoken attack on the way the family court system settles disputes over children. The man was forced to give up his five -year battle for access to his seven-year-old daughter after 43 court hearings, which were presided over by 16 judges.
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