That is so ridiculous. Why is no one answering my question, and why has this turned into another pointless "the US sucks" thread?
I really hate this kind of behavior, and what's more, I don't think you are being very logical at all.
You break a law, you get arrested (in most cases). That is how laws work, people. Evidently, it is illegal to open emergency exits on planes and walk around the runway with a beer. My sympathies are actually with the flight attendant in this case, and I think if he was arrested the passenger should've been too, but the flight attendant probably was aware of the laws and probably will not be prosecuted to the fullest extent of them.
So, this is proof of the US's tyrannical abuse of freedom because.... (?) We have laws? Hell, in other countries, the flight attendant probably would've been beheaded.