I'm sure the President and his demeanor doesn't help.

I did.  Maybe you should read my comment.  

"In this text, I used the word "racism" meaning "the act of diving people into races". It was the best word I could find to describe it."

Unfortunately you fell into a bit of a trap - in western cultures the term has been redefined so minorities can't be racist (that requires power & privilege). And even if they do happen to discriminate based on skin color, they're just "colorist." Higher education is basically required for many people here in the US to get a job with a decent income, and getting a degree requires both going heavily in debt (probably to the government) and taking a number of social justice courses, where this sort of teaching springs forth. And from these courses aspiring young minds learn how white people are racist, denying it is racist, and ignoring race is also racist.

So yeah, if it seems we're obsessed with race, a good starting point as to understanding why is how most kids are being taught to think that way these days. And from there it spreads to mass media, so even those who haven't had formal classes get exposed to it.

Actually, there were more racially motivated violent acts during Obama's presidency than there were at any time since the 1960's. Trump haters are going to blame EVERYTHING on Trump, no matter how ridiculous it it sounds. It's just what haters do.

First of all, the US is probably one of the least racist nations on earth. If the US was as racist as a lot of people claim, then the country could not exist in it's current state. It should also be noted that most of the people who voted for America's first black President were white voters. Second, most people nowadays simply do not care about race. In fact, I would go further and say that the majority of Americans are sick of talking about it and just want to be left alone. Third, the most racist people out there are usually the ones who can't shut up about it. Whenever they're called out on it, they usually reply by saying "I can't be racist because...blah blah blah." They love double standards. They also love redefining the definition of the word racist in order for it to fit their narrative. Fourthly, the reason we have black neighborhoods is because a long time ago, many black moved into the inner city and stayed where they are. It's also a part of community culture that goes back a long way. Long ago, at least up until half a century ago, most people in the cities lived around others who they identified with the most. German immigrants lived in German neighborhoods. Italian immigrants lived in Italian neighborhoods. Irish immigrants lived in Irish neighborhoods. Chinese immigrants lived in Chinese neighborhoods. However, this changed over time and that leads to what I'm going to say next. America DID have a problem with racism a long time ago. This is when many blacks moved into the cities while many whites and Asians moved out and into the newly constructed suburbs. That's when the German, Irish, and Italian neighborhoods evaporated in many cities. Some of these neighborhoods still exist, which is where you get Little Italy and China Town from.

If you want to go into detail about why the inner cities are so bad, then I should save that for another post.

The Edit certainly help people that failed to interpret his points on the whole OP as it was much more as dividing in races than prejudice and harm towards black people. So the posting before edit mitigate but doesn't really cover all of it.

And the division in races on medical or scientific studies is something (and since there is positive evidence of difference in the DNA and physiology then it is valid to keep verifying these differences) but he is talking much more about the need of affirmation and segregation that not only white people do, but most ethinicities in USA.

I read your comment, and you are reading it just as if the OP wasn't talking about ethnicity segregation instead of racial law.

"And if any US citizen is living in "Horrible" conditions, it IS NOT BECAUSE OF THEIR SKIN COLOR! "

But it is, kind of. Look at history. Not for everyone, but for many.

There absolutely, definitely is a historical racism issue that still effects black Americans (and, to a less extent, other minorities) today.  No question about it.  Just like there are still rich Rockefellers riding off of the money their family made 6-8 generations ago, so to are there poor people stuck in the lack of education/poverty spiral.   

With that said, that fact, in and of itself, says nothing about racism in the USA today.  

As we currently understand it racial and ethnographic differences are no more scientifically significant than socioeconomic differences. So like the idea of Rich and Poor, race and ethnicity are social constructs albeit with apparent differences. These constructs are useful for categorization but with regard to what the OP is claiming, this need for racial affirmation, I'm arguing that this is a result of the differences grouped together to form racial classes misused as justification for amoral behavior.

Once again my favorite parallel to this are Caste System's. The idea of a Caste is even more tenuous than that of typical class-ism and yet a large part of Indian society and culture was built around it till recently. Many more rural parts of India have that exact same affirmation and segregation but based on Caste rather than Race.

That's a pretty loaded question.