The sister of two men arrested after an anti-terror raid said armed police "stormed in" the east London property without identifying themselves.
Humeya Kalam told BBC News: "To us they were just burglars, to us it was pitch dark, just lights and guns everywhere".
Brothers Abul Koyair, 20, and Mohammed Abdulkahar, 23, who was shot in the shoulder, were released without charge a week after the raid in Forest Gate.
They will hold a media conference near the house where the raid took place.
It comes after policing and political figures defended Metropolitan Police chief Sir Ian Blair amid resignation calls.
Ms Kalam told BBC Radio 4's Today programme: "We're just a normal family, normal average family."
She said she had been "petrified" and did not realise it was a police raid until she went outside the house after the dawn raid.
"The police didn't identify themselves until I left the house. I was dragged down the stairs into the police van. When I saw the police van, obviously I realised these were police.
"I thought they were armed burglars and I was going to die."
The brothers, who had been held under the Terrorism Act 2000, were released on Friday after police found no trace of an alleged chemical device at their home.
Mr Abdulkahar was shot and injured during the raid, which police said followed "specific intelligence" of a terrorist threat.
Ms Kalam told the Today programme she was "just as bemused as everyone else" as to why this had happened to her family.
"You would not expect to be woken up four o'clock in the morning, with a gun in your face," she said.
"The only difference is, I'm assuming, is that I am not white."
Ms Kalam added that her brothers had both been badly affected by the experience.
"They are in a considerable amount of pain, both physically and mentally," she said.
A spokesman for community organisation the Newham Monitoring Project, which has been supporting the family, said: "The two brothers will talk about their experience - what happened to them during the raid, what happened in Paddington Green police station and the effect it has had on their family and community."
The solicitor for the two brothers reportedly said they planned to sue the police.
The police have defended the raid and the Independent Police Complaints Commission (IPCC) is investigating.
On Sunday, about 300 Muslims protested outside Scotland Yard against the tactics used by police in the raid by some 250 officers.
Meanwhile, Prime Minister Tony Blair was among senior policing and political figures on Monday to give Sir Ian his personal backing.
"The prime minister continues to give his full support to Ian Blair - full stop," his spokesman said.
Metropolitan Police Authority (MPA) chairman Len Duvall said questions over the raid remained but insisted it had not undermined his confidence in Sir Ian.
Several newspapers called on Sir Ian to resign over the weekend.
MPA member Damian Hockney said the authority was split on the issue.
He told BBC Radio 4: "I think Sir Ian is now the wrong person, we need courageous and strong leadership at the moment."