People can be seen bloodied, being carried away by others, and in a pick-up truck.
Omar Mateen had a history with the FBI, officials confirmed.
The Florida senator talks to The Advocate about what led to the attack.
City officials have released the names of 49 people killed at the gay nightclub in Orlando Sunday.
The Westboro Baptist Church celebrated the Orlando mass shooting on Twitter.
Speculation fills the internet as officials determine if this is a hate crime, domestic terrorism, or both.
Some politicians with antigay records appear genuinely moved.