It is capable of manipulating a live telecast to where from the moment an image is captured by the video camera and between the instant the image is received virtually anything could be changed and edited, from the color of your clothes to the actual words you speak.
Seeing something broadcast live does not automatically equate to seeing what actually happened.
The only way you could be somewhat sure the video is actual is to watch it directly off of the original recording.
After that is when one of my little sayings comes into play, which is "who you decide to believe is the most critical decision you make in life."
If someone has a history of lieing to you a dozen times a day do you wake up each morning giving them a clean slate and believe them until you catch them lieing again?
For me there comes a point in time where it isn't worth wasting the salt so I just disregard everything they say, the burden is on them to become believeable, not on me to believe them.