Now Playing: Trailer: 'Prejudice & Pride'

Now Playing: Prejudice & Pride: Revisiting the tragic fire that killed 32 in a New Orleans gay bar

Now Playing: Protesters after cop shoots unarmed black teen: 'He didn't deserve to die like that'

Now Playing: Family sues school district after 12-year-old girl commits suicide

Now Playing: Police shoot and kill 17-year-old fleeing from them at traffic stop, authorities say

Now Playing: Sisters reunited for 1st time in 6 decades

Now Playing: Southwest Key CEO defends proposed immigration center as 'childcare facility

Now Playing: Charleston formally apologizes for its role in slavery

Now Playing: What you need to know about tender age detention centers

Now Playing: Immigration debate continues over children separated from their parents

Now Playing: Father questions how Chicago paramedics mistakenly believed his son was dead

Now Playing: Terminally ill man meets his great-granddaughter

Now Playing: Armed civilian who shot Walmart gunman is a pastor

Now Playing: 3 people die after being pulled from apartment swimming pool in NC

Now Playing: Protesters rally in opposition to Trump's family separation immigration policy

Now Playing: Trump to meet with Republican lawmakers divided over family separation

Now Playing: Gunshot victim covered with sheet starts breathing again

Now Playing: Hip-hop mourns rapper XXXTentacion after fatal shooting

Now Playing: Body cam video shows officer pulled gun during Sterling Brown arrest

Now Playing: School drops Confederate name, opting for Obama