Why was Cesear hit?

Youngest Capo in Bonnano history. Was it simply because he was viewed as a threat or had he actually made a transgression?

MORGAN: Why didn't you fight him at the park if you wanted to? I'm not goin' now, I'm eatin' my snack.
CHUCKIE: Morgan, Let's go.
MORGAN: I'm serious Chuckie, I ain't goin'.
WILL: So don't go.