Answer:
I am all around yet to me you are half blind. Sunlight makes me invisible and difficult to find.
Some people avoid me some people count me some people just consume me
By myself, I'm practically nothing. Worthless as a leader, but when I follow a group, their strength increases tenfold. What am I?
If you've got me I'm everywhere. If you share me I'm nowhere. What am I?
I go around a yard but does not move.
I am a rock group with four members. All dead one was assassinated.