itachi innocent? dont make me laugh, if u alrady know what he did to his clan and only left one alive, then how can u say that hes innocent,
In my defense we've actually never seen him killing his clan mates in any flashbacks, in each flashback we either see Sauske crying over his mom and day bodies or Itachi talking to Sauske after it occured. Sauske has never said he watched his clansman die so he's just going by what Itachi told him.
and if he was why is he fighting kakashi and the other jounins?
Self Defense, he was on his way out of the village when Asuma and Kuranai refused to let him leave. Plus wouldn't you be pissed if you traveled all that way and they interrupted your meal?