"Manners maketh man" is an enduring message. Also, class and money aren't what define you -- your character does. Loyalty and hard work are rewarded.
An endless parade of so-over-the-top-that-it's-almost-cartoonish violence; it's stylized and clearly not realistic, but it's still shocking and brutal. Many gory injuries and deaths, especially during a scene of mass carnage inside a church. Scenes include hatchets to the head, a man sliced in half, gunshots at close range, crashes, stabbings, a man impaled on a pole, explosions, eye gougings, heads exploding, and much, much more. It's gruesome yet glamorized, and the sum total is unsettling.
A woman's naked backside is shown as part of a tasteless, sexist, sexually provocative joke. Allusions to sexual acts (including anal sex), some kissing/flirting.
Frequent strong language includes "f--k," "s--t," "bitch," "damn," the "N" word, and a homophobic slur.
Mentions of luxury items/products, including a 1962 Dalmont and bespoke suits made on London's Savile Row. Also Adidas, Guinness, and a big, obvious plug for McDonald's.
Many scenes show people drinking beer and hard liquor at pubs and at home, sometimes leading to violence. Rohypnol is also mentioned.