It is a controversial topic, that in many occasions we do not know handle it.

"It is a controversial topic that we often do not know how to handle."

Some people think that the best it is not teaching about this topic in school, and others think that it is important show this topic to awaken consciousness.

"Some people think it is better to not teach about this topic in school. Others think that it is important to show this topic to raise awareness"


"Awaken consciousness" isn't a natural sounding phrase, "raise awareness" sounds better.

A few people think that it is not good idea teaching about racism to the kids, because they do not have this kind of perception, but if racism is taught, they will learn that there is a difference between races.

"Some people think that it is not a good idea to teach about racism to kids..."
"Some people" sounds more natural than "A few people". You also need an article (the word "a") to describe "good idea" and don't need the article (the word "the") when describing "kids".

"...because kids are not naturally racist..."
Using "they" here could be ambiguous, you might be talking about "a few people" or "kids".

They want that this topic does not be touched with the purpose that become non-existent.

"They think that not touching the subject will cause it to disappear."

On the other hand, some people want that this topic be taught in schools and everywhere, with the purpose to show the origin and consequences of this problem.

"...some people want this topic to be taught..."

They want to arousal conscience for changing this painful reality.

"They want to raise awareness in order to make a positive change"

Moreover, it is important for them do not be forgotten, their fights, their pain, their history.

"Moreover, it is important that their fights, their pain, and their history are not forgotten."

In conclusion, we need to have an honest conversation with specialists like, sociologist, psychologist and different parts of the society, for figuring out the best way to affront this problematic.

"In conclusion, we need to have an honest conversation with experts such as sociologists, psychologists, and other members of society to figure out the best way to tackle this problem"