If people act ignorant, I can respond with sarcasm and anger, or I can educate them about motorcycling in a way that makes sense to them. I explain to them how lane splitting is legal, people doing it at all speeds and conditions are breaking the law, and that while they might not like us splitting, I don't like them eating, drinking, taking, applying makeup, smoking tobacco, smoking weed, doing work or reading the newspaper while driving either and perhaps they could have a word with all their driving buddies.
ALso when they complain about speeding I inquire if they always keep it under 65 or the occasionally drive faster. Or what the proper move is when the left lane is being blocked by a slow driver.
It's very easy once they realize they apply the same judgement to law as we do.