Education is more than what you are taught in school.  It's what you are taught everywhere and every day.  From how your parent teach you the difference between right and wrong, to how you daily enviroment holds certain civil expectations.  So the reason for such bad behavior is because it was allowed to learned that it was socially acceptable.

Following on from DaBen - and being a little more explicit - every single moment of your waking life, you are receiving an education. Every act you see, every word you hear, forms part of your education - and what you are educted in is taken as 'truth'. So, every time they see or hear something that isn't actively told is wrong, is subtley reinforced as being correct, right - the 'way we do things'... so, yes, if someone doesn't explicitly tell you something is wrong, then it is effectively telling them it is right. Seeing all those people spit - must be right! Forming a queue - what for?? People are 'eductated' to act the way they do.

If you don't like it, 'educate' them better! But, be warned - humans will only change when they are given sufficient reason for doing so - and most will contentedly go to their graves before changing! (especially when the person has a lot invested in the action in question...).

ok let me take a stab, when you are a child , your brain is a sponge. it absorbs everything you see, especially from your parents. your parents teach you what is wrong or right both directly and indirectly. when your parents slap your your hands and say wrong or no. if your parents see you doing something and they smile or do not say anything then you think it is ok. also you learn from the examples your parents set, if you see your parent drinking for the blue bottle you a child would want to drink from the blue bottle also. if you see your parent spitting and crapping everywhere and anywhere then you will think it is ok to spit and crap everywhere. 

you are not only teaching the child exactly what acts are acceptable / unacceptable , but you are also shaping their values and principles which happens very indirectly. by teaching your child to spit and crap everywhere and anywhere you are also teaching them not to respect others who walk the same streets as you. so when they toss away their leftover meal , they will throw it anywhere, regardless of who it inconviences. because the parent plantedthe seed of "dont care about anyone else"

this all is education, i thought everyone was smart enough to figure this out, but yet again i forgot where i was. 

Education or environment?  This is relative.

Most of these behavors are learned from a young age, but they are also picked up later because of environment.  I know expats here that spit on the street, then say they only do it in China (when in Rome?).  Same thing with pissing in the street (granted after a few quaffs at the bar and walking home).  For the record, I am not one one these people.

And this is not just China, as most people here seem to alude to.  Have you BEEN to Oklahoma or West Virginia?  Or a trailer park in Chino?  People acting like pigs is not a Chinese problem, but a global one....we just see more people here acting this way.

How many times have you pulled up to a red light at home, looked at the car beside you, and seen the driver picking his (or her) nose?  I see it all the time!