Some anime are worse offenders then others. Perfect example: the Mahou Shoujo Lyrical Nanoha franchise. The writers have a hard on for NO ONE IS TEH EVIL, IT'S NOT THEIR FAULT.
Precia: (Despite the crew of the Asura pointing out that she was unhinged, dangerous, arrogant, and unethical BEFORE getting underageB& from Midchilda) I'm not evil, I'm just crazy cause I tried to divide the Universe by Zero and killed my daughter. I can't be held resposible for my actions.
Fate: Willing obeys her obviously crazy and evil mother for obviously nefarious purposes until she finds out she's, to quote Roger Smith, "A TOMATO!!!11!". Then is instantly forgiven by everyone because she did it for teh love, not charged with any crimes, and made a police officer.
Signum, Vita, Zafira, and Shamal: Go out and attack innocent people and police officers in cold blood. They do it to save their loved one, but (willfully?) block out that this won't save her anyway and in fact makes it worse. Later realise they can just go kill dumb animals and accomplish the same thing just as fast. Later in StrikerS it's stated they killed most of the people they attacked. They're let off scot free and become police officers. Ironically, Hayate is blamed and gains the stigma for their crimes.
Jail Scaglietti: I'm evil, and a certified omnicidal, deranged, crimes against God maniac. But it's not my fault, I was made that way.
Every other villain in StrikerS: It's not our fault, we're just completely mind-controlled by Jail's never explained ability to completely control the mind of anyone he wants in the blink of an eye.