The guilt of the bystander

I am the bystander
I see all, I hear all
But in actions I did stall

Sometimes you see an unfairness
And keep quiet you do
Sometimes you analyze and realise
Your control over the situation is none

So what does one do there?
Close eyes to what is true?
Or speak up without fear
Knowing changes it brings about are none
Or cloud eyes with guilt and tears
While actions you take are still none...

Sometimes there is a need to take a stand
Just to speak up, say aloud  that " 'tis was wrong"
Knowing it doesn't solve matters
For in absense of it at all
One experiences the guilt of the bystander

One wonders how valid it is...
Is it the same as the wrongdoer?
Or less simply for lack of action?
Or nullified for lack of possible result of any said action?
The guilt that eats away the bystander