NO, you aren't! They are as responsible for his behavior as he is.
Actually, they're more responsible. He should have been stood on a long time before gun/pot.
Remember though, we're supposed to believe the picture of him at 10 - 12 yrs old that they gave the media to plaster all over the universe, not the actual photo depicting his age of 17.
Even though it has nothing to do with the trial, I'm having a hard time believing his parents stood by and never saw any of the crap he was posting online and sending from his phone, much less what was going on with him at school. You can't tell me they didn't have any clue as to what he was doing. If anyone believes that, they believe every word Jodi Arias says.