The ratings system is extremely screwed up in America. The reason kids seem to be seeing more violent movies is that when the PG-13 rating was first created, it was for movies that were a little too racy to be PG. These days, though, pretty much every PG-13 you see was filmed as an R-rated movie, then trimmed ever-so-slightly in order to pass as a PG-13.
Compared to other countries, our movies are very, VERY tame. European films are very liberal with nudity and sexual situations, the difference being that these subjects are usually handled with respect, whereas in America it's mainly "hey, look, boobs!!!!!" The vast majority of Asian action films are far gorier and more violent than anything coming out of America.
Lately, ratings have gotten out of control. I am shocked that movies like School of Rock and Pirates of the Carribean recieved PG-13 ratings, considering both would be great fun for little kids.
I have nothing against the R-rating. When I watch certain movies, I want a realistic story, and in today's society, people often use words that are considered "bad".
But, I think the issue is that for a while there, movies were just plain crappy. It comes and goes, the late 70s/early 80's had great movies, the late 80s was mostly crap. Around 94, movies got better for a while, but then got crappy again. I think they've started getting better in the past few years again.
As for JohnGalt, I think when you're younger, it's easier to voice your opinion on a message board than in real life. He would not feel like an equal among you guys (just like I probably wouldn't), so it's easier for him to voice his opinions in something like this, where he feels equal. That can come across as arrogant at times, trust me I know, I've been there.
But, I've got to say, I disagree with the notion that people older than you should be respected just because they're older than you. Maybe it's just my/our generation, but I'm a firm believer in the Golden Rule. Everyone starts out even in my book, and they can either earn my respect by respecting me or doing something respectable, or they can lose my respect by disrespecting me or just being generally disrespectable. I don't know, like I said, maybe it's just my generation. I'm certainly polite to people that I don't know, no matter what their age is, but if someone crosses me or someone I respect or something like that, then I'm not going to respect you, and I'm not going to have any problems letting you know that.