A particular target of the church is fallen soldiers, according to Steve Drain, who said the church arrives at the funerals to let families know their loved ones are in hell because they fought for a supposedly damned country.
"Military people mostly do the nastiest stuff ... and they, like, let their kids be raped and stuff like that," Bo said when asked why he thought members of the military were going to hell.
His dad, however, clarified their beliefs off camera.
"Remember what we all say: No God fearing man or woman would lift a finger fighting for a country awashed in sin like this," Steve Drain said to his son.
The message is reinforced to Bo and his sisters every night when they sit at home and go over Phelps' fire and brimstone-filled sermons. Steve Drain also has cast the children in the wide variety of music videos the church produces that lampoon popular music and ideas, with their own beliefs on every topic imaginable.
The children of the Westboro Baptist Church can be seen singing enthusiastically to the tune of songs like "Santa Claus is Coming to Town," saying instead, "Santa Claus will take you to hell," as well as the Beatles classic "Hey Jude" ("Hey, Evil Reprobate Jew").
One video features little Faith Drain, with bright blue eyes and blond hair, smiling brightly through a verse of "God Hates the World," that her parents are proud to say they taught her.
"How many people teach their daughter to gyrate and do some Britney Spears song?" Steve Drain said. "I'm teaching my daughter what the scripture says."
"And the scripture says if you don't obey the Lord, your God, you're going to hell," Luci Drain added.
According to their oldest daughter, Lauren Drain, the songs and the pickets and the constant lessons on Phelps' sermons are all part of the church's constant indoctrination.
"They sing lullabies about people going to hell," she told Chris Cuomo in an exclusive interview. "I remember I did that with Faith, and I was teaching her songs and stuff. I was trying to please my parents."
As Lauren Drain reached her 20s however, she said she began to question the gospel she was surrounded by, questions that quickly drew the ire of her follow congregants.
"I saw some hypocrisy, and I mentioned them and they hated it," she said. "You're not supposed to question anything."
Lauren Drain said her natural curiosity drew rebukes from Pastor Fred Phelps.
Eventually, she said, when she was 21 the members voted her out of the church and out of her home, including her own parents.
"My dad didn't cry, my sister didn't cry, my mom cried, she said. "I'm bawling and like out of my mind, you know, and they're laughing. I'm telling them I'm sorry. I'm telling them I'll do anything, what is it going to take, when can I come back."
But her pleas fell on deaf ears, and the same night she was voted out she said her family sent her to stay at a hotel and cut off all communication.
A week later, Lauren Drain returned home to pick up her belongings and said she found that her youngest sister Faith already had been taught to hate her.
"I was gone a week, came back to get my stuff, and my little 3-year-old sister told me, 'You don't live here anymore.' Mocking me," Lauren Drain said. "I raised her from the time she was born. I used to watch her every day. And a week later, she is happy I'm gone."