This is the chilling moment armed SWAT officers captured a knifeman accused of slashing an Oprah Winfrey-linked activist and killing her mother. Ring doorbell footage showed Sergio Fraire , 30, being led away in handcuffs following the horrific attack in Burbank, California, early Monday. High-flying mental health activist Meera Varma, 25, was injured and her teacher mother Arti, 59, died from stab wounds. Cops said they are looking at three possible motives , including whether the suspect knew