A sea of pink gathered outside a Massachusetts courthouse Thursday as hundreds of supporters of Lindsay Clancy rallied during her murder trial, turning the area outside the courtroom into a show of solidarity and a wider call for greater awareness of women's mental health.Clancy, a former labor and delivery nurse, is accused of killing her three young children in January 2023. Her defense does not deny that the children died at her hands but argues that severe mental illness, including alleged postpartum psychosis, left her unable to be held criminally responsible.The demonstration marked the largest public show of support for Clancy since the trial began nearly a month ago.‘Peace for Lindsay’: supporters gather outside courthouseAround 300 people, mostly women dressed in pink, stood outside the courthouse before Thursday's proceedings. Some wore shirts carrying messages such as “Peace For Lindsay” and “Justice For Lindsay.”The crowd remained largely silent for more than an hour before breaking into applause when defense attorney Kevin Reddington arrived.For many attending, the rally was about more than the outcome of one criminal trial. Supporters said Clancy's case had struck a personal chord and renewed concerns about whether women experiencing serious mental health problems are adequately heard and treated.April Vincent, a paralegal from Rhode Island, said the gathering reflected a broader frustration among women who feel their medical and mental health concerns are often dismissed.“Women are being dismissed, neglected and ignored when we speak up,” she said, adding that the rally was intended to ensure women facing similar struggles were heard.The central question in the Lindsay Clancy trialClancy, 36, has pleaded not guilty to murder charges in the deaths of her three children — Callan, Dawson and Cora — who were between 8 months and 5 years old.Prosecutors allege that Clancy deliberately planned the killings on January 24, 2023. They argue that she arranged for her husband to leave the house by asking him to pick up medicine and dinner, creating an opportunity for her to be alone with the children.The prosecution has also raised questions about the circumstances surrounding Clancy's subsequent suicide attempt.After the deaths of her children, Clancy jumped from a second-story window, an incident that left her paralyzed from the waist down.Her defense team, however, maintains that her mental state is central to the case. Reddington has argued that Clancy was suffering from postpartum psychosis and should not be considered criminally responsible for what happened.Why postpartum psychosis has become a major focusThe high-profile trial has brought renewed attention to postpartum psychosis, a rare but severe psychiatric condition that can develop after childbirth.Researchers estimate that the condition affects roughly 1 to 2 women per 1,000 births. It is distinct from the more common postpartum depression and can involve severe changes in mood, thinking and perception.Clancy's attorneys have linked her alleged condition to factors that can follow childbirth, including hormonal changes, extreme stress and prolonged sleep deprivation.The debate over her mental health has become one of the defining issues of the trial, with the case drawing intense attention from people who have experienced postpartum mental health challenges themselves or watched loved ones struggle.A rally shaped by personal experiencesSeveral people at Thursday's demonstration said they had followed Clancy's trial closely and saw it as an opportunity to push for greater recognition of postpartum mental illness.Jeanne Zaborski, a retired nurse from Massachusetts, said her own family's experience with mental health difficulties after childbirth motivated her to attend.As the rally came to a close, supporters formed a circle, recited the Lord's Prayer and raised their hands to form heart symbols. Some participants also displayed flags from different countries, underscoring what organizers described as international support for Clancy.Rally organizer Renee Kimball told the crowd to remain united and expressed confidence in Clancy's defense team as the trial continues.A case with implications beyond the courtroomWhile prosecutors seek to prove that the deaths of Clancy's children were planned and intentional, the defense is asking jurors to consider the extent to which severe mental illness shaped her actions.That clash — between allegations of deliberate planning and arguments about profound psychiatric illness — lies at the center of one of the most closely watched cases involving postpartum mental health in recent years.Outside the courthouse, Thursday's rally made clear that, regardless of the eventual verdict, the Lindsay Clancy case has already sparked a much broader conversation about postpartum psychosis, maternal mental health and whether women in crisis receive the care and attention they need.