LONDON — Munira Mahmud still hears the terrified screams of her neighbors trying to escape. Zahra, her 2-year-old daughter, wakes up in the middle of the night, crying out, “Fire, fire!” So does Mohammed, her 6-year-old son, who lost his best friend and her mother, whom he affectionately called “auntie.”

“They’re fighting the fire,” he says.

On Wednesday, a day short of a year after the incineration of Grenfell Tower, a tragedy that not only claimed 72 lives but also opened gaping wounds in the social fabric of the surrounding area, survivors like Ms. Mahmud and the bereaved are still steeped in trauma.

But they are also angry at the absence of accountability, skeptical that a public inquiry that began last month will ever deliver justice. Though the police warned to much fanfare last year that their investigation could bring charges of manslaughter, to date no one has been charged with any crime over the fire.

The Grenfell blaze, in the early hours of June 14 last year, came to symbolize inequality in one of London’s wealthiest areas, Kensington and Chelsea, where those of more modest means had long felt treated as second-class citizens.