In a heart-wrenching incident that has provoked significant public outrage, a family of four tragically lost their lives when they were struck by a vehicle while waiting for a bus in San Francisco. The victims, Diego Cardoso de Oliveira, 40, his wife Matilde Ramos Pinto, 38, and their two young sons, ages 20 months and 2 months, were en route to the city’s zoo to celebrate their wedding anniversary when the accident occurred on 16 March 2024.
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At approximately midday, the family was gathered at a bus stop near Ulloa Street and Lenox Way in the West Portal neighbourhood. Sadly, an 80-year-old woman, Mary Fong Lau, was driving a 2014 Mercedes SUV at an alarming speed of 70 mph when she veered onto the pavement, crashing into the bus stop and fatally injuring the family, as confirmed by the San Francisco Police Department.

Diego and their eldest son died at the scene, while Matilde, who worked as a producer for Ridley Scott Associates, was transported to a nearby hospital but succumbed to her injuries later that day. Their infant son, who was also severely injured, passed away four days later after being treated in intensive care.
Initially arrested and facing multiple charges, including three counts of felony vehicular manslaughter and reckless driving, Lau pleaded not guilty. However, following a series of legal proceedings, she changed her plea to no contest on 13 February 2026. This plea implies acceptance of a conviction without a formal admission of guilt, thus allowing her to forgo a trial.
During a court hearing in February, Judge Bruce Chan indicated his intention to impose probation without jail time, a decision that has sparked intense criticism from the victims’ family and community members. The judge remarked that Lau would have to carry the burden of the harm caused for the rest of her life, but many argue that this perspective undermines the gravity of her actions.
The attorney for Lau contended that the defendant was delivering lunch to her brother when the car unexpectedly accelerated. In contrast, family members of the victims have expressed their outrage at the leniency of the potential sentence. Luis Ramos Pinto, the brother of Matilde, voiced his frustration, stating that the evidence demonstrated gross negligence on the part of Lau and calling for a punishment commensurate with the severity of the consequences.
The public response has been notably vocal, with over 13,000 individuals signing an online petition demanding a prison sentence for Lau. The petition criticises the judge’s acceptance of Lau’s plea, arguing that the loss of four lives—especially two young children—should warrant a far more severe punishment.
The family conveyed their sorrow and disillusionment in the petition, stating their belief that the decision to accept a no contest plea in such a serious case is deeply concerning. They underscored that avoiding a direct admission of guilt allowed Lau to escape full accountability for her actions.
As Lau’s sentencing date of 20 March approaches, the community remains tense and apprehensive. The victims’ loved ones continue to advocate for what they consider a just outcome, hoping that the judicial system will take into account the full impact of this tragic event.
With public sentiment strongly against the anticipated leniency, this case serves as a painful reminder of the consequences of reckless driving and the implications it bears not just on victims, but on entire communities torn apart by such tragedies. The outcome of the sentencing will likely resonate far beyond the courtroom, as advocates continue to call for changes in how similar cases are addressed in the future.
