You must not see the white people who wear hoodies, sag their pants and wear a wide variety of hair styles. Yet, they are not vilified by because of their looks and costuming.
All people act different~~~~ !!! Go to the Midwest, people act different than people in the South, go to the West people act different than people in the north.. its the nature of the environmental tonality within society. This delusion that there is 'one way to act'... is a white construct, that tries to claim it is a standard, when they have no standard across the nation, as references, they act different ways based on region, county, city and community.
As to dressing well, we did have various standards that are changing in all sectors of society. One can go to any part of the country, and not all
business people will wear a suit and tie, not all will wear a sports jacket and a tie, and today, not all even wear a tie.
There was a time when many men wore hats, today that is not a standard in society of the brim hat's they wore, people now wear what use to be called baseball caps, but they are no longer called 'baseball hats'... I don't know what the term is that describes the caps, but they are worn forward, backwards, tilted to the side and they have many sayings written on them. There was a time women wore dresses in offices, but today, women were pretty much what ever they want to wear.
One can go to a rural areas and see white people wearing a lot of jungle camaflauge prints... and no one makes an issue of it, yet if one goes to a black community and black people wear clothing with designs on them, or other cuts and stylings.. suddenly its criticized. It's as if white people based on region, still have a delusion that black people have to conform to what white people wear. It's Bullshit.
As to well dressed blacks, since people began to earn money post slavery, many black people have cared to dress well, as prior to that, blacks had no option to choose what they wear during slavery. It is very rare that one will find a black man with scuffed up shoes in a business environment, or not care about his footwear in general. trace that back to a people, who never had a choice for 100's of years about footwear, but when black people began to earn money post slavery, they showed their care for their footwear.
Point is, there is no mandate for black people to be dictated to by white people.
Society has standards that every one abides by.
i.e. setting in executive business, where a business suit is standard; that's what people wear, regardless of race, ethnicity or culture attire they may wear outside of that environment.
You say black people act different in groups...
maybe you are not paying attention to white people and how they act when they are in various forms of groups.
- a group of rowdy white kids, is claimed - oh' they are just having fun".... (yet some of them tear up a lot of stuff)
- when black kids are rowdy in groups, they are immediately considered "very different, and certainly not thought of as "oh' they are just having fun"... they are seen as criminals.
It's time society get over thinking "white peoples narratives" are the only narrative that is valid.
White People no longer get to tell American's how to live
(Jim Crow Ideology is over and White People need to get over trying to re-create it)
Today, more white people adopt stylings and emulate stylings that are initiated by black people;
black people are not demanding that white people adopt it.. the way white people try to demand that black people adopt and emulate their stylings.