It wasn't Hezbollah that invaded and occupied Lebanon previously.It's hard to tell in Lebanon because Hezbollah has assassinated and removed numerous politicians including a previous PM. The public statements will be anti-Israel but many of the people involved in the March 14 movement will be quietly celebrating and hoping that hezbollah gets weakened enough that the Lebanese army can actually establish authority over their country.
Hezbollah, like Hamas, was the response to Israeli terrorism and colonization.
There is no reason for Israel to be attacking Lebanon now.