About month or two ago I watched a documentary.
It was some shady back alley film I found on the internet, it was full of heated arguments and night vision shots of sad mistreated animals being raised for the slaughter house.
This film brought up an anger and sadness in me, but mostly just made me want to puke.
(I wouldn't recommend anyone go through those 40 something minutes of emotions on purpose.)
It also gave me an epiphany of sorts.