Dear friendz...
world is full of people. 
In ur perspective, some r good to u.
Some r bad. Some might be near.
Others not much.
Some very dredful.
Some funny.
But.....world is made by all of them.
When we see physically challenged people, we feel sorry for them and try to help them when ever possible.
But in the following 'GADHA' what the poet is saying?
     'dhaNNA bahira andhaa tE 
     cciA jeeanti maaNusE lOgE
     Na suNanti pisuNa va a Nam 
     khalaNam rudhhim Na yekkhanti.'
Meaning: In this world blessed and real lives r of those who r blind and deaf. 'cause the rising of bad deeds is not seen by the blind and the bad comments of the rogues r unheard by the deaf.'Probably this GADHAKARA would have been tortured by the society which reflected in his poem. But in our world of 'Self centered natures' we have to live very cautiously with the people who bother us more by their filthy comments.  
This reminds of the great quote to me. 

So friendz, Good and bad r equally important in life as "Light and darkness". Without darkness, one can not understand how light is valuable for him.