Several more grain silos damaged by the 2020 Beirut port explosion collapsed Thursday, as hundreds marched toward them to mark the second anniversary of the disaster.AFP correspondents saw parts of the gutted structure fall down while local media said at least four towers had collapsed, only days after a similar incident.Experts had been warning for days that the silos could collapse imminently after recording unprecedented inclination rates.Lama Hashem, a 30-year-old who took part in Thursday's protest march said the incident reignited her blast trauma.