We do not know if Mel wrote or even thought those apologies. The second one was to us, the Jewish people. Since it was so personal, I think I will forgive him when he does the things he must to prove he wrote and meant the apology. And not before.
Without people who felt as he does, Hitler would have been thrown out of power. Mel's beliefs can be dangerous. He is in a position to persuade.
I didn't see your answer for this, the third thing. Does that mean he has to pay?
Hitler was just a little more complicated that hurling expletives at law enforcement.
It's Mel's problem WITH the officer NOT the entire frickin world. The only thing left for him to do is show up in an inner city Church in LA and apologize, it's worked for lots of others. He just had the wrong setting for the last apology.