The Revenge of the Sith novelization fixes the plot of the movie Revenge of the Sith.
In the novel, it's pretty obvious that the Jedi had it coming and that Anakin did the right thing. Whether he needed to personally "deal" with the Younglings or not is debatable but it was pretty obvious that someone would have to deal with them.
Now, in the CGI show, The Clone Wars, Anakin is a pure hero. No whining. No endless brooding. Even the voice acting is forceful. He's doing what he thinks is right and the Jedi are quite often NOT doing what is right (other than Obi Wan, Yoda, and Anakin, the Jedi treat the clones basically like disposable droids).
Anakin's gradual migration to the dark side comes across has his occasional (but becoming more often) use of anger to fuel his combat abilities which he deems necessary to do "what needs to be done". The Jedi, by contrast, often come across as hopelessly detached and elitist. Anakin's problem is that he cares about people. The Jedi's problem is that they don't care, the whole war is academic.
In the most recent episode, it becomes pretty obvious that when the people Anakin cares about are in danger, Anakin will do whatever it takes to win.