"What is MK Ultra?" For me, it's hard to make it a short description and let the person get the full understanding of what MK Ultra is, since there are so many layers.
Here's the description of MK Ultra from Wikipedia. Basically, MK Ultra was/is a CIA mind control program that is still being implemented on human subjects. i.e.: Celebrities, Athletes, Politicians, even people that are seemingly the average person.
How do they do it? They use trauma to enforce the brainwashing, usually when the subject is a young child or still in the womb. Here's a good link to really explain what trauma-based mind control is. The trauma causes the brain to "split" into "alters" or "multiple personalities". The brain is like a computer, which has files (alters/personalities) that can be accessed by "handlers" by "triggering" the mind control victim.
You can spot MK victims easily once you understand the codes and triggers. Here's a short list:
Butterflies (espcially monarch butterflies)
Chains (such as jewelry like necklaces or bracelets)
Black & White & Red (and many other colors, but these are used the most)
Ruby Slippers (Wizard of Oz Programming)
A dog (Oz Programming)
Animal print clothing and accessories (Especially leopard print for Sex Kitten Alters) & Pink Hair
Jewels (For jewel programming)
Cages
Anything Disney
Horned Hand Sign (also used as a trigger)
Alice in Wonderland Themes
Baphomet/Goat of Mendes
Pentagrams
Shhhh themes
Tattooed programming
Birds (Project Bluebird)
"OK" hand sign = 666
Masonic pyramid hand sign
Skull & bones
Here are some videos that explain some of the programming:
Alice in Wonderland Confirmed Occult Pedophilia Mind Control
Below is a video of what are called "sleepers", which are people who are programmed to be seen as normal people, but when they are "triggered" they will do what they were programmed to do.
Mind Control Themes & Programming Triggers in Movies