Relatives and friends of an innocent man shot dead by UK police on the Tube on Friday have marched in his home town in Brazil demanding arrests be made.
Further demonstrations are being planned in other areas
Jean Charles de Menezes, 27, was shot eight times at Stockwell station after he was mistaken for a suicide bomber.
Tony Blair has said he is "desperately sorry" but urged people to support the police in "difficult circumstances" in the wake of the London bombings.
The hundreds of protesters in Gonzaga said the apology did not go far enough.
The Landless Rural Workers' Movement said it would demonstrate on Tuesday in front of the British Embassy in Brasilia and the consulate in Rio de Janeiro.
Foreign Secretary Jack Straw also apologised at a meeting with Brazilian counterpart Celso Amorim on Monday.
Mr Straw said he "profoundly regretted" the death.
The family of Mr Menezes blamed police incompetence for his death
Security sources have said electrician Mr Menezes was in the UK on an out-of-date student visa.
Mr Straw said he did not know Mr Menezes' precise immigration status but said it was his "understanding that he was here lawfully".
Mr Amorim said the dead man's family wanted his body quickly returned to Brazil.
And he said compensation from the Metropolitan Police was important for what was a "humble" family.
"It would not lessen the shock and concern at the death of this innocent person but it would be something concrete in addition to the apologies that have been made verbally," he said.
Police's difficult task
Earlier, Mr Blair was asked about the death after he discussed anti-terror measures in a meeting with French prime minister Dominique de Villepin.
He told reporters: "We are all desperately sorry for the death of an innocent person. I understand entirely the feelings of the young man's family.
"But we also have to understand the police are doing their job in very, very difficult circumstances and it is important that we give them every support."
The prime minister said the police would have been criticised for failing to act had the man turned out to be a terrorist.
The death of Mr de Menezes has sparked new debate over the police shoot to kill policy against suspected suicide bombers.
Labour peer Lord Ahmed warned that illegal immigrants would try to run away if challenged by police.
"And whilst we need to catch those illegal immigrants or asylum seekers, nevertheless we can't shoot them because they're not terrorists," he said.
'No need for fear'
Liberal Democrat peer Baroness Falkner was among those meeting police at Scotland Yard on Monday to discuss the shooting.
"One terrible tragedy does not mean the entire ethnic minority communities of Britain need to fear for their lives," she said.
At their talks in Downing Street, Mr Blair and Mr de Villepin agreed that the UK and France would share lists of the people who incite terrorism.
Mr de Villepin said "jihadists" who had trained and fought in other countries posed a particular threat.
"They have been operational and if they have done it once, they can do it again," he told reporters.
France already shared information about such people with Germany, he said.
With Parliament now on its summer break, Mr Blair insisted political decisions would continue to be taken irrespective of whether individual ministers were on holiday.
He said ministers remained in touch constantly and Parliament could be recalled if necessary.
Mr Blair again said terrorists should not be allowed to use the Iraq war as a justification for their "ideology".
This weekend's bombings in Sharm al-Sheik in Egypt underlined the "global state" of terrorism, he said.
The French prime minister, who opposed the Iraq conflict, said nations had to work together against terrorists who often based their actions around crises, such as the wars in Bosnia, Afghanistan and Iraq.
Political resolutions were needed for conflicts which could be "open wounds", he argued.